Add pfetch

1 files changed, 1958 insertions, 0 deletions

diff --git a/local/bin/pfetch b/local/bin/pfetch
new file mode 100755
index 0000000..d47b878
--- /dev/null
+++ b/local/bin/pfetch
@@ -0,0 +1,1958 @@
+#!/bin/sh
+#
+# pfetch - Simple POSIX sh fetch script.
+
+# Wrapper around all escape sequences used by pfetch to allow for
+# greater control over which sequences are used (if any at all).
+esc() {
+    case $1 in
+        CUU) e="${esc_c}[${2}A" ;; # cursor up
+        CUD) e="${esc_c}[${2}B" ;; # cursor down
+        CUF) e="${esc_c}[${2}C" ;; # cursor right
+        CUB) e="${esc_c}[${2}D" ;; # cursor left
+
+        # text formatting
+        SGR)
+            case ${PF_COLOR:=1} in
+                (1)
+                    e="${esc_c}[${2}m"
+                ;;
+
+                (0)
+                    # colors disabled
+                    e=
+                ;;
+            esac
+        ;;
+
+        # line wrap
+        DECAWM)
+            case $TERM in
+                (dumb | minix | cons25)
+                    # not supported
+                    e=
+                ;;
+
+                (*)
+                    e="${esc_c}[?7${2}"
+                ;;
+            esac
+        ;;
+    esac
+}
+
+# Print a sequence to the terminal.
+esc_p() {
+    esc "$@"
+    printf '%s' "$e"
+}
+
+# This is just a simple wrapper around 'command -v' to avoid
+# spamming '>/dev/null' throughout this function. This also guards
+# against aliases and functions.
+has() {
+    _cmd=$(command -v "$1") 2>/dev/null || return 1
+    [ -x "$_cmd" ] || return 1
+}
+
+log() {
+    # The 'log()' function handles the printing of information.
+    # In 'pfetch' (and 'neofetch'!) the printing of the ascii art and info
+    # happen independently of each other.
+    #
+    # The size of the ascii art is stored and the ascii is printed first.
+    # Once the ascii is printed, the cursor is located right below the art
+    # (See marker $[1]).
+    #
+    # Using the stored ascii size, the cursor is then moved to marker $[2].
+    # This is simply a cursor up escape sequence using the "height" of the
+    # ascii art.
+    #
+    # 'log()' then moves the cursor to the right the "width" of the ascii art
+    # with an additional amount of padding to add a gap between the art and
+    # the information (See marker $[3]).
+    #
+    # When 'log()' has executed, the cursor is then located at marker $[4].
+    # When 'log()' is run a second time, the next line of information is
+    # printed, moving the cursor to marker $[5].
+    #
+    # Markers $[4] and $[5] repeat all the way down through the ascii art
+    # until there is no more information left to print.
+    #
+    # Every time 'log()' is called the script keeps track of how many lines
+    # were printed. When printing is complete the cursor is then manually
+    # placed below the information and the art according to the "heights"
+    # of both.
+    #
+    # The math is simple: move cursor down $((ascii_height - info_height)).
+    # If the aim is to move the cursor from marker $[5] to marker $[6],
+    # plus the ascii height is 8 while the info height is 2 it'd be a move
+    # of 6 lines downwards.
+    #
+    # However, if the information printed is "taller" (takes up more lines)
+    # than the ascii art, the cursor isn't moved at all!
+    #
+    # Once the cursor is at marker $[6], the script exits. This is the gist
+    # of how this "dynamic" printing and layout works.
+    #
+    # This method allows ascii art to be stored without markers for info
+    # and it allows for easy swapping of info order and amount.
+    #
+    # $[2] ___      $[3] goldie@KISS
+    # $[4](.· |     $[5] os KISS Linux
+    #     (<> |
+    #    / __  \
+    #   ( /  \ /|
+    #  _/\ __)/_)
+    #  \/-____\/
+    # $[1]
+    #
+    # $[6] /home/goldie $
+
+    # End here if no data was found.
+    [ "$2" ] || return
+
+    # Store the values of '$1' and '$3' as we reset the argument list below.
+    name=$1
+    use_seperator=$3
+
+    # Use 'set --' as a means of stripping all leading and trailing
+    # white-space from the info string. This also normalizes all
+    # white-space inside of the string.
+    #
+    # Disable the shellcheck warning for word-splitting
+    # as it's safe and intended ('set -f' disables globbing).
+    # shellcheck disable=2046,2086
+    {
+        set -f
+        set +f -- $2
+        info=$*
+    }
+
+    # Move the cursor to the right, the width of the ascii art with an
+    # additional gap for text spacing.
+    esc_p CUF "$ascii_width"
+
+    # Print the info name and color the text.
+    esc_p SGR "3${PF_COL1-4}";
+    esc_p SGR 1
+    printf '%s' "$name"
+    esc_p SGR 0
+
+    # Print the info name and info data separator, if applicable.
+    [ "$use_seperator" ] || printf %s "$PF_SEP"
+
+    # Move the cursor backward the length of the *current* info name and
+    # then move it forwards the length of the *longest* info name. This
+    # aligns each info data line.
+    esc_p CUB "${#name}"
+    esc_p CUF "${PF_ALIGN:-$info_length}"
+
+    # Print the info data, color it and strip all leading whitespace
+    # from the string.
+    esc_p SGR "3${PF_COL2-9}"
+    printf '%s' "$info"
+    esc_p SGR 0
+    printf '\n'
+
+    # Keep track of the number of times 'log()' has been run.
+    info_height=$((${info_height:-0} + 1))
+}
+
+get_title() {
+    # Username is retrieved by first checking '$USER' with a fallback
+    # to the 'id -un' command.
+    user=${USER:-$(id -un)}
+
+    # Hostname is retrieved by first checking '$HOSTNAME' with a fallback
+    # to the 'hostname' command.
+    #
+    # Disable the warning about '$HOSTNAME' being undefined in POSIX sh as
+    # the intention for using it is allowing the user to overwrite the
+    # value on invocation.
+    # shellcheck disable=3028,2039
+    hostname=${HOSTNAME:-${hostname:-$(hostname)}}
+
+    # If the hostname is still not found, fallback to the contents of the
+    # /etc/hostname file.
+    [ "$hostname" ] || read -r hostname < /etc/hostname
+
+    # Add escape sequences for coloring to user and host name. As we embed
+    # them directly in the arguments passed to log(), we cannot use esc_p().
+    esc SGR 1
+    user=$e$user
+    esc SGR "3${PF_COL3:-1}"
+    user=$e$user
+    esc SGR 1
+    user=$user$e
+    esc SGR 1
+    hostname=$e$hostname
+    esc SGR "3${PF_COL3:-1}"
+    hostname=$e$hostname
+
+    log "${user}@${hostname}" " " " " >&6
+}
+
+get_os() {
+    # This function is called twice, once to detect the distribution name
+    # for the purposes of picking an ascii art early and secondly to display
+    # the distribution name in the info output (if enabled).
+    #
+    # On first run, this function displays _nothing_, only on the second
+    # invocation is 'log()' called.
+    [ "$distro" ] && {
+        log os "$distro" >&6
+        return
+    }
+
+    case $os in
+        (Linux*)
+            # Some Linux distributions (which are based on others)
+            # fail to identify as they **do not** change the upstream
+            # distribution's identification packages or files.
+            #
+            # It is senseless to add a special case in the code for
+            # each and every distribution (which _is_ technically no
+            # different from what it is based on) as they're either too
+            # lazy to modify upstream's identification files or they
+            # don't have the know-how (or means) to ship their own
+            # lsb-release package.
+            #
+            # This causes users to think there's a bug in system detection
+            # tools like neofetch or pfetch when they technically *do*
+            # function correctly.
+            #
+            # Exceptions are made for distributions which are independent,
+            # not based on another distribution or follow different
+            # standards.
+            #
+            # This applies only to distributions which follow the standard
+            # by shipping unmodified identification files and packages
+            # from their respective upstreams.
+            if has lsb_release; then
+                distro=$(lsb_release -sd)
+
+            # Android detection works by checking for the existence of
+            # the follow two directories. I don't think there's a simpler
+            # method than this.
+            elif [ -d /system/app ] && [ -d /system/priv-app ]; then
+                distro="Android $(getprop ro.build.version.release)"
+
+            elif [ -f /etc/os-release ]; then
+                # This used to be a simple '. /etc/os-release' but I believe
+                # this is insecure as we blindly executed whatever was in the
+                # file. This parser instead simply handles 'key=val', treating
+                # the file contents as plain-text.
+                while IFS='=' read -r key val; do
+                    case $key in
+                        (PRETTY_NAME)
+                            distro=$val
+                        ;;
+                    esac
+                done < /etc/os-release
+
+            else
+                # Special cases for (independent) distributions which
+                # don't follow any os-release/lsb standards whatsoever.
+                has crux && distro=$(crux)
+                has guix && distro='Guix System'
+            fi
+
+            # 'os-release' and 'lsb_release' sometimes add quotes
+            # around the distribution name, strip them.
+            distro=${distro##[\"\']}
+            distro=${distro%%[\"\']}
+
+            # Check to see if we're running Bedrock Linux which is
+            # very unique. This simply checks to see if the user's
+            # PATH contains a Bedrock specific value.
+            case $PATH in
+                (*/bedrock/cross/*)
+                    distro='Bedrock Linux'
+                ;;
+            esac
+
+            # Check to see if Linux is running in Windows 10 under
+            # WSL1 (Windows subsystem for Linux [version 1]) and
+            # append a string accordingly.
+            #
+            # If the kernel version string ends in "-Microsoft",
+            # we're very likely running under Windows 10 in WSL1.
+            if [ "$WSLENV" ]; then
+                distro="${distro}${WSLENV+ on Windows 10 [WSL2]}"
+
+            # Check to see if Linux is running in Windows 10 under
+            # WSL2 (Windows subsystem for Linux [version 2]) and
+            # append a string accordingly.
+            #
+            # This checks to see if '$WSLENV' is defined. This
+            # appends the Windows 10 string even if '$WSLENV' is
+            # empty. We only need to check that is has been _exported_.
+            elif [ -z "${kernel%%*-Microsoft}" ]; then
+                distro="$distro on Windows 10 [WSL1]"
+            fi
+        ;;
+
+        (Darwin*)
+            # Parse the SystemVersion.plist file to grab the macOS
+            # version. The file is in the following format:
+            #
+            # <key>ProductVersion</key>
+            # <string>10.14.6</string>
+            #
+            # 'IFS' is set to '<>' to enable splitting between the
+            # keys and a second 'read' is used to operate on the
+            # next line directly after a match.
+            #
+            # '_' is used to nullify a field. '_ _ line _' basically
+            # says "populate $line with the third field's contents".
+            while IFS='<>' read -r _ _ line _; do
+                case $line in
+                    # Match 'ProductVersion' and read the next line
+                    # directly as it contains the key's value.
+                    ProductVersion)
+                        IFS='<>' read -r _ _ mac_version _
+                        continue
+                    ;;
+
+                    ProductName)
+                        IFS='<>' read -r _ _ mac_product _
+                        continue
+                    ;;
+                esac
+            done < /System/Library/CoreServices/SystemVersion.plist
+
+            # Use the ProductVersion to determine which macOS/OS X codename
+            # the system has. As far as I'm aware there's no "dynamic" way
+            # of grabbing this information.
+            case $mac_version in
+                (10.4*)  distro='Mac OS X Tiger' ;;
+                (10.5*)  distro='Mac OS X Leopard' ;;
+                (10.6*)  distro='Mac OS X Snow Leopard' ;;
+                (10.7*)  distro='Mac OS X Lion' ;;
+                (10.8*)  distro='OS X Mountain Lion' ;;
+                (10.9*)  distro='OS X Mavericks' ;;
+                (10.10*) distro='OS X Yosemite' ;;
+                (10.11*) distro='OS X El Capitan' ;;
+                (10.12*) distro='macOS Sierra' ;;
+                (10.13*) distro='macOS High Sierra' ;;
+                (10.14*) distro='macOS Mojave' ;;
+                (10.15*) distro='macOS Catalina' ;;
+                (11*)    distro='macOS Big Sur' ;;
+                (12*)    distro='macOS Monterey' ;;
+                (*)      distro='macOS' ;;
+            esac
+
+            # Use the ProductName to determine if we're running in iOS.
+            case $mac_product in
+                (iP*) distro='iOS' ;;
+            esac
+
+            distro="$distro $mac_version"
+        ;;
+
+        (Haiku)
+            # Haiku uses 'uname -v' for version information
+            # instead of 'uname -r' which only prints '1'.
+            distro=$(uname -sv)
+        ;;
+
+        (Minix|DragonFly)
+            distro="$os $kernel"
+
+            # Minix and DragonFly don't support the escape
+            # sequences used, clear the exit trap.
+            trap '' EXIT
+        ;;
+
+        (SunOS)
+            # Grab the first line of the '/etc/release' file
+            # discarding everything after '('.
+            IFS='(' read -r distro _ < /etc/release
+        ;;
+
+        (OpenBSD*)
+            # Show the OpenBSD version type (current if present).
+            # kern.version=OpenBSD 6.6-current (GENERIC.MP) ...
+            IFS=' =' read -r _ distro openbsd_ver _ <<-EOF
+				$(sysctl kern.version)
+			EOF
+
+            distro="$distro $openbsd_ver"
+        ;;
+
+        (FreeBSD)
+            distro="$os $(freebsd-version)"
+        ;;
+
+        (*)
+            # Catch all to ensure '$distro' is never blank.
+            # This also handles the BSDs.
+            distro="$os $kernel"
+        ;;
+    esac
+}
+
+get_kernel() {
+    case $os in
+        # Don't print kernel output on some systems as the
+        # OS name includes it.
+        (*BSD*|Haiku|Minix)
+            return
+        ;;
+    esac
+
+    # '$kernel' is the cached output of 'uname -r'.
+    log kernel "$kernel" >&6
+}
+
+get_host() {
+    case $os in
+        (Linux*)
+            # Despite what these files are called, version doesn't
+            # always contain the version nor does name always contain
+            # the name.
+            read -r name    < /sys/devices/virtual/dmi/id/product_name
+            read -r version < /sys/devices/virtual/dmi/id/product_version
+            read -r model   < /sys/firmware/devicetree/base/model
+
+            host="$name $version $model"
+        ;;
+
+        (Darwin* | FreeBSD* | DragonFly*)
+            host=$(sysctl -n hw.model)
+        ;;
+
+        (NetBSD*)
+            host=$(sysctl -n machdep.dmi.system-vendor \
+                             machdep.dmi.system-product)
+        ;;
+
+        (OpenBSD*)
+            host=$(sysctl -n hw.version)
+        ;;
+
+        (*BSD* | Minix)
+            host=$(sysctl -n hw.vendor hw.product)
+        ;;
+    esac
+
+    # Turn the host string into an argument list so we can iterate
+    # over it and remove OEM strings and other information which
+    # shouldn't be displayed.
+    #
+    # Disable the shellcheck warning for word-splitting
+    # as it's safe and intended ('set -f' disables globbing).
+    # shellcheck disable=2046,2086
+    {
+        set -f
+        set +f -- $host
+        host=
+    }
+
+    # Iterate over the host string word by word as a means of stripping
+    # unwanted and OEM information from the string as a whole.
+    #
+    # This could have been implemented using a long 'sed' command with
+    # a list of word replacements, however I want to show that something
+    # like this is possible in pure sh.
+    #
+    # This string reconstruction is needed as some OEMs either leave the
+    # identification information as "To be filled by OEM", "Default",
+    # "undefined" etc and we shouldn't print this to the screen.
+    for word do
+        # This works by reconstructing the string by excluding words
+        # found in the "blacklist" below. Only non-matches are appended
+        # to the final host string.
+        case $word in
+           (To      | [Bb]e      | [Ff]illed | [Bb]y  | O.E.M.  | OEM  |\
+            Not     | Applicable | Specified | System | Product | Name |\
+            Version | Undefined  | Default   | string | INVALID | �    | os |\
+            Type1ProductConfigId )
+                continue
+            ;;
+        esac
+
+        host="$host$word "
+    done
+
+    # '$arch' is the cached output from 'uname -m'.
+    log host "${host:-$arch}" >&6
+}
+
+get_uptime() {
+    # Uptime works by retrieving the data in total seconds and then
+    # converting that data into days, hours and minutes using simple
+    # math.
+    case $os in
+        (Linux* | Minix* | SerenityOS*)
+            IFS=. read -r s _ < /proc/uptime
+        ;;
+
+        (Darwin* | *BSD* | DragonFly*)
+            s=$(sysctl -n kern.boottime)
+
+            # Extract the uptime in seconds from the following output:
+            # [...] { sec = 1271934886, usec = 667779 } Thu Apr 22 12:14:46 2010
+            s=${s#*=}
+            s=${s%,*}
+
+            # The uptime format from 'sysctl' needs to be subtracted from
+            # the current time in seconds.
+            s=$(($(date +%s) - s))
+        ;;
+
+        (Haiku)
+            # The boot time is returned in microseconds, convert it to
+            # regular seconds.
+            s=$(($(system_time) / 1000000))
+        ;;
+
+        (SunOS)
+            # Split the output of 'kstat' on '.' and any white-space
+            # which exists in the command output.
+            #
+            # The output is as follows:
+            # unix:0:system_misc:snaptime	14809.906993005
+            #
+            # The parser extracts:          ^^^^^
+            IFS='	.' read -r _ s _ <<-EOF
+				$(kstat -p unix:0:system_misc:snaptime)
+			EOF
+        ;;
+
+        (IRIX)
+            # Grab the uptime in a pretty format. Usually,
+            # 00:00:00 from the 'ps' command.
+            t=$(LC_ALL=POSIX ps -o etime= -p 1)
+
+            # Split the pretty output into days or hours
+            # based on the uptime.
+            case $t in
+                (*-*)   d=${t%%-*} t=${t#*-} ;;
+                (*:*:*) h=${t%%:*} t=${t#*:} ;;
+            esac
+
+            h=${h#0} t=${t#0}
+
+            # Convert the split pretty fields back into
+            # seconds so we may re-convert them to our format.
+            s=$((${d:-0}*86400 + ${h:-0}*3600 + ${t%%:*}*60 + ${t#*:}))
+        ;;
+    esac
+
+    # Convert the uptime from seconds into days, hours and minutes.
+    d=$((s / 60 / 60 / 24))
+    h=$((s / 60 / 60 % 24))
+    m=$((s / 60 % 60))
+
+    # Only append days, hours and minutes if they're non-zero.
+    case "$d" in ([!0]*) uptime="${uptime}${d}d "; esac
+    case "$h" in ([!0]*) uptime="${uptime}${h}h "; esac
+    case "$m" in ([!0]*) uptime="${uptime}${m}m "; esac
+
+    log uptime "${uptime:-0m}" >&6
+}
+
+get_pkgs() {
+    # This works by first checking for which package managers are
+    # installed and finally by printing each package manager's
+    # package list with each package one per line.
+    #
+    # The output from this is then piped to 'wc -l' to count each
+    # line, giving us the total package count of whatever package
+    # managers are installed.
+    packages=$(
+        case $os in
+            (Linux*)
+                # Commands which print packages one per line.
+                has bonsai     && bonsai list
+                has crux       && pkginfo -i
+                has pacman-key && pacman -Qq
+                has dpkg       && dpkg-query -f '.\n' -W
+                has rpm        && rpm -qa
+                has xbps-query && xbps-query -l
+                has apk        && apk info
+                has guix       && guix package --list-installed
+                has opkg       && opkg list-installed
+
+                # Directories containing packages.
+                has kiss       && printf '%s\n' /var/db/kiss/installed/*/
+                has cpt-list   && printf '%s\n' /var/db/cpt/installed/*/
+                has brew       && printf '%s\n' "$(brew --cellar)/"*
+                has emerge     && printf '%s\n' /var/db/pkg/*/*/
+                has pkgtool    && printf '%s\n' /var/log/packages/*
+                has eopkg      && printf '%s\n' /var/lib/eopkg/package/*
+
+                # 'nix' requires two commands.
+                has nix-store  && {
+                    nix-store -q --requisites /run/current-system/sw
+                    nix-store -q --requisites ~/.nix-profile
+                }
+            ;;
+
+            (Darwin*)
+                # Commands which print packages one per line.
+                has pkgin      && pkgin list
+                has dpkg       && dpkg-query -f '.\n' -W
+
+                # Directories containing packages.
+                has brew       && printf '%s\n' /usr/local/Cellar/*
+
+                # 'port' prints a single line of output to 'stdout'
+                # when no packages are installed and exits with
+                # success causing a false-positive of 1 package
+                # installed.
+                #
+                # 'port' should really exit with a non-zero code
+                # in this case to allow scripts to cleanly handle
+                # this behavior.
+                has port       && {
+                    pkg_list=$(port installed)
+
+                    case "$pkg_list" in
+                        ("No ports are installed.")
+                            # do nothing
+                        ;;
+
+                        (*)
+                            printf '%s\n' "$pkg_list"
+                        ;;
+                    esac
+                }
+            ;;
+
+            (FreeBSD*|DragonFly*)
+                pkg info
+            ;;
+
+            (OpenBSD*)
+                printf '%s\n' /var/db/pkg/*/
+            ;;
+
+            (NetBSD*)
+                pkg_info
+            ;;
+
+            (Haiku)
+                printf '%s\n' /boot/system/package-links/*
+            ;;
+
+            (Minix)
+                printf '%s\n' /usr/pkg/var/db/pkg/*/
+            ;;
+
+            (SunOS)
+                has pkginfo && pkginfo -i
+                has pkg     && pkg list
+            ;;
+
+            (IRIX)
+                versions -b
+            ;;
+
+            (SerenityOS)
+                while IFS=" " read -r type _; do
+                    [ "$type" != dependency ] &&
+                        printf "\n"
+                done < /usr/Ports/packages.db
+            ;;
+        esac | wc -l
+    )
+
+    # 'wc -l' can have leading and/or trailing whitespace
+    # depending on the implementation, so strip them.
+    # Procedure explained at https://github.com/dylanaraps/pure-sh-bible
+    # (trim-leading-and-trailing-white-space-from-string)
+    packages=${packages#"${packages%%[![:space:]]*}"}
+    packages=${packages%"${packages##*[![:space:]]}"}
+
+    case $os in
+        # IRIX's package manager adds 3 lines of extra
+        # output which we must account for here.
+        (IRIX)
+            packages=$((packages - 3))
+        ;;
+
+        # OpenBSD's wc prints whitespace before the output
+        # which needs to be stripped.
+        (OpenBSD)
+            packages=$((packages))
+        ;;
+    esac
+
+    case $packages in
+        (1?*|[2-9]*)
+            log pkgs "$packages" >&6
+        ;;
+    esac
+}
+
+get_memory() {
+    case $os in
+        # Used memory is calculated using the following "formula":
+        # MemUsed = MemTotal + Shmem - MemFree - Buffers - Cached - SReclaimable
+        # Source: https://github.com/KittyKatt/screenFetch/issues/386
+        (Linux*)
+            # Parse the '/proc/meminfo' file splitting on ':' and 'k'.
+            # The format of the file is 'key:   000kB' and an additional
+            # split is used on 'k' to filter out 'kB'.
+            while IFS=':k '  read -r key val _; do
+                case $key in
+                    (MemTotal)
+                        mem_used=$((mem_used + val))
+                        mem_full=$val
+                    ;;
+
+                    (Shmem)
+                        mem_used=$((mem_used + val))
+                    ;;
+
+                    (MemFree | Buffers | Cached | SReclaimable)
+                        mem_used=$((mem_used - val))
+                    ;;
+
+                    # If detected this will be used over the above calculation
+                    # for mem_used. Available since Linux 3.14rc.
+                    # See kernel commit 34e431b0ae398fc54ea69ff85ec700722c9da773
+                    (MemAvailable)
+                        mem_avail=$val
+                    ;;
+                esac
+            done < /proc/meminfo
+
+            case $mem_avail in
+                (*[0-9]*)
+                    mem_used=$(((mem_full - mem_avail) / 1024))
+                ;;
+
+                *)
+                    mem_used=$((mem_used / 1024))
+                ;;
+            esac
+
+            mem_full=$((mem_full / 1024))
+        ;;
+
+        # Used memory is calculated using the following "formula":
+        # (wired + active + occupied) * 4 / 1024
+        (Darwin*)
+            mem_full=$(($(sysctl -n hw.memsize) / 1024 / 1024))
+
+            # Parse the 'vmstat' file splitting on ':' and '.'.
+            # The format of the file is 'key:   000.' and an additional
+            # split is used on '.' to filter it out.
+            while IFS=:. read -r key val; do
+                case $key in
+                    (*' wired'*|*' active'*|*' occupied'*)
+                        mem_used=$((mem_used + ${val:-0}))
+                    ;;
+                esac
+
+            # Using '<<-EOF' is the only way to loop over a command's
+            # output without the use of a pipe ('|').
+            # This ensures that any variables defined in the while loop
+            # are still accessible in the script.
+            done <<-EOF
+                $(vm_stat)
+			EOF
+
+            mem_used=$((mem_used * 4 / 1024))
+        ;;
+
+        (OpenBSD*)
+            mem_full=$(($(sysctl -n hw.physmem) / 1024 / 1024))
+
+            # This is a really simpler parser for 'vmstat' which grabs
+            # the used memory amount in a lazy way. 'vmstat' prints 3
+            # lines of output with the needed value being stored in the
+            # final line.
+            #
+            # This loop simply grabs the 3rd element of each line until
+            # the EOF is reached. Each line overwrites the value of the
+            # previous one so we're left with what we wanted. This isn't
+            # slow as only 3 lines are parsed.
+            while read -r _ _ line _; do
+                mem_used=${line%%M}
+
+            # Using '<<-EOF' is the only way to loop over a command's
+            # output without the use of a pipe ('|').
+            # This ensures that any variables defined in the while loop
+            # are still accessible in the script.
+            done <<-EOF
+                $(vmstat)
+			EOF
+        ;;
+
+        # Used memory is calculated using the following "formula":
+        # mem_full - ((inactive + free + cache) * page_size / 1024)
+        (FreeBSD*|DragonFly*)
+            mem_full=$(($(sysctl -n hw.physmem) / 1024 / 1024))
+
+            # Use 'set --' to store the output of the command in the
+            # argument list. POSIX sh has no arrays but this is close enough.
+            #
+            # Disable the shellcheck warning for word-splitting
+            # as it's safe and intended ('set -f' disables globbing).
+            # shellcheck disable=2046
+            {
+                set -f
+                set +f -- $(sysctl -n hw.pagesize \
+                                      vm.stats.vm.v_inactive_count \
+                                      vm.stats.vm.v_free_count \
+                                      vm.stats.vm.v_cache_count)
+            }
+
+            # Calculate the amount of used memory.
+            # $1: hw.pagesize
+            # $2: vm.stats.vm.v_inactive_count
+            # $3: vm.stats.vm.v_free_count
+            # $4: vm.stats.vm.v_cache_count
+            mem_used=$((mem_full - (($2 + $3 + $4) * $1 / 1024 / 1024)))
+        ;;
+
+        (NetBSD*)
+            mem_full=$(($(sysctl -n hw.physmem64) / 1024 / 1024))
+
+            # NetBSD implements a lot of the Linux '/proc' filesystem,
+            # this uses the same parser as the Linux memory detection.
+            while IFS=':k ' read -r key val _; do
+                case $key in
+                    (MemFree)
+                        mem_free=$((val / 1024))
+                        break
+                    ;;
+                esac
+            done < /proc/meminfo
+
+            mem_used=$((mem_full - mem_free))
+        ;;
+
+        (Haiku)
+            # Read the first line of 'sysinfo -mem' splitting on
+            # '(', ' ', and ')'. The needed information is then
+            # stored in the 5th and 7th elements. Using '_' "consumes"
+            # an element allowing us to proceed to the next one.
+            #
+            # The parsed format is as follows:
+            # 3501142016 bytes free      (used/max  792645632 / 4293787648)
+            IFS='( )' read -r _ _ _ _ mem_used _ mem_full <<-EOF
+                $(sysinfo -mem)
+			EOF
+
+            mem_used=$((mem_used / 1024 / 1024))
+            mem_full=$((mem_full / 1024 / 1024))
+        ;;
+
+        (Minix)
+            # Minix includes the '/proc' filesystem though the format
+            # differs from Linux. The '/proc/meminfo' file is only a
+            # single line with space separated elements and elements
+            # 2 and 3 contain the total and free memory numbers.
+            read -r _ mem_full mem_free _ < /proc/meminfo
+
+            mem_used=$(((mem_full - mem_free) / 1024))
+            mem_full=$(( mem_full / 1024))
+        ;;
+
+        (SunOS)
+            hw_pagesize=$(pagesize)
+
+            # 'kstat' outputs memory in the following format:
+            # unix:0:system_pages:pagestotal	1046397
+            # unix:0:system_pages:pagesfree		885018
+            #
+            # This simply uses the first "element" (white-space
+            # separated) as the key and the second element as the
+            # value.
+            #
+            # A variable is then assigned based on the key.
+            while read -r key val; do
+                case $key in
+                    (*total)
+                        pages_full=$val
+                    ;;
+
+                    (*free)
+                        pages_free=$val
+                    ;;
+                esac
+            done <<-EOF
+				$(kstat -p unix:0:system_pages:pagestotal \
+                           unix:0:system_pages:pagesfree)
+			EOF
+
+            mem_full=$((pages_full * hw_pagesize / 1024 / 1024))
+            mem_free=$((pages_free * hw_pagesize / 1024 / 1024))
+            mem_used=$((mem_full - mem_free))
+        ;;
+
+        (IRIX)
+            # Read the memory information from the 'top' command. Parse
+            # and split each line until we reach the line starting with
+            # "Memory".
+            #
+            # Example output: Memory: 160M max, 147M avail, .....
+            while IFS=' :' read -r label mem_full _ mem_free _; do
+                case $label in
+                    (Memory)
+                        mem_full=${mem_full%M}
+                        mem_free=${mem_free%M}
+                        break
+                    ;;
+                esac
+            done <<-EOF
+                $(top -n)
+			EOF
+
+            mem_used=$((mem_full - mem_free))
+        ;;
+
+        (SerenityOS)
+            IFS='{}' read -r _ memstat _ < /proc/memstat
+
+            set -f -- "$IFS"
+            IFS=,
+
+            for pair in $memstat; do
+                case $pair in
+                    (*user_physical_allocated*)
+                        mem_used=${pair##*:}
+                    ;;
+
+                    (*user_physical_available*)
+                        mem_free=${pair##*:}
+                    ;;
+                esac
+            done
+
+            IFS=$1
+            set +f --
+
+            mem_used=$((mem_used * 4096 / 1024 / 1024))
+            mem_free=$((mem_free * 4096 / 1024 / 1024))
+
+            mem_full=$((mem_used + mem_free))
+        ;;
+    esac
+
+    log memory "${mem_used:-?}M / ${mem_full:-?}M" >&6
+}
+
+get_wm() {
+    case $os in
+        (Darwin*)
+            # Don't display window manager on macOS.
+        ;;
+
+        (*)
+            # xprop can be used to grab the window manager's properties
+            # which contains the window manager's name under '_NET_WM_NAME'.
+            #
+            # The upside to using 'xprop' is that you don't need to hardcode
+            # a list of known window manager names. The downside is that
+            # not all window managers conform to setting the '_NET_WM_NAME'
+            # atom..
+            #
+            # List of window managers which fail to set the name atom:
+            # catwm, fvwm, dwm, 2bwm, monster, wmaker and sowm [mine! ;)].
+            #
+            # The final downside to this approach is that it does _not_
+            # support Wayland environments. The only solution which supports
+            # Wayland is the 'ps' parsing mentioned below.
+            #
+            # A more naive implementation is to parse the last line of
+            # '~/.xinitrc' to extract the second white-space separated
+            # element.
+            #
+            # The issue with an approach like this is that this line data
+            # does not always equate to the name of the window manager and
+            # could in theory be _anything_.
+            #
+            # This also fails when the user launches xorg through a display
+            # manager or other means.
+            #
+            #
+            # Another naive solution is to parse 'ps' with a hardcoded list
+            # of window managers to detect the current window manager (based
+            # on what is running).
+            #
+            # The issue with this approach is the need to hardcode and
+            # maintain a list of known window managers.
+            #
+            # Another issue is that process names do not always equate to
+            # the name of the window manager. False-positives can happen too.
+            #
+            # This is the only solution which supports Wayland based
+            # environments sadly. It'd be nice if some kind of standard were
+            # established to identify Wayland environments.
+            #
+            # pfetch's goal is to remain _simple_, if you'd like a "full"
+            # implementation of window manager detection use 'neofetch'.
+            #
+            # Neofetch use a combination of 'xprop' and 'ps' parsing to
+            # support all window managers (including non-conforming and
+            # Wayland) though it's a lot more complicated!
+
+            # Don't display window manager if X isn't running.
+            [ "$DISPLAY" ] || return
+
+            # This is a two pass call to xprop. One call to get the window
+            # manager's ID and another to print its properties.
+            has xprop && {
+                # The output of the ID command is as follows:
+                # _NET_SUPPORTING_WM_CHECK: window id # 0x400000
+                #
+                # To extract the ID, everything before the last space
+                # is removed.
+                id=$(xprop -root -notype _NET_SUPPORTING_WM_CHECK)
+                id=${id##* }
+
+                # The output of the property command is as follows:
+                # _NAME 8t
+                # _NET_WM_PID = 252
+                # _NET_WM_NAME = "bspwm"
+                # _NET_SUPPORTING_WM_CHECK: window id # 0x400000
+                # WM_CLASS = "wm", "Bspwm"
+                #
+                # To extract the name, everything before '_NET_WM_NAME = \"'
+                # is removed and everything after the next '"' is removed.
+                wm=$(xprop -id "$id" -notype -len 25 -f _NET_WM_NAME 8t)
+            }
+
+            # Handle cases of a window manager _not_ populating the
+            # '_NET_WM_NAME' atom. Display nothing in this case.
+            case $wm in
+                (*'_NET_WM_NAME = '*)
+                    wm=${wm##*_NET_WM_NAME = \"}
+                    wm=${wm%%\"*}
+                ;;
+
+                (*)
+                    # Fallback to checking the process list
+                    # for the select few window managers which
+                    # don't set '_NET_WM_NAME'.
+                    while read -r ps_line; do
+                        case $ps_line in
+                            (*catwm*)     wm=catwm ;;
+                            (*fvwm*)      wm=fvwm ;;
+                            (*dwm*)       wm=dwm ;;
+                            (*2bwm*)      wm=2bwm ;;
+                            (*monsterwm*) wm=monsterwm ;;
+                            (*wmaker*)    wm='Window Maker' ;;
+                            (*sowm*)      wm=sowm ;;
+							(*penrose*)   wm=penrose ;;
+                        esac
+                    done <<-EOF
+                        $(ps x)
+					EOF
+                ;;
+            esac
+        ;;
+    esac
+
+    log wm "$wm" >&6
+}
+
+
+get_de() {
+    # This only supports Xorg related desktop environments though
+    # this is fine as knowing the desktop environment on Windows,
+    # macOS etc is useless (they'll always report the same value).
+    #
+    # Display the value of '$XDG_CURRENT_DESKTOP', if it's empty,
+    # display the value of '$DESKTOP_SESSION'.
+    log de "${XDG_CURRENT_DESKTOP:-$DESKTOP_SESSION}" >&6
+}
+
+get_shell() {
+    # Display the basename of the '$SHELL' environment variable.
+    log shell "${SHELL##*/}" >&6
+}
+
+get_editor() {
+    # Display the value of '$VISUAL', if it's empty, display the
+    # value of '$EDITOR'.
+    editor=${VISUAL:-"$EDITOR"}
+
+    log editor "${editor##*/}" >&6
+}
+
+get_palette() {
+    # Print the first 8 terminal colors. This uses the existing
+    # sequences to change text color with a sequence prepended
+    # to reverse the foreground and background colors.
+    #
+    # This allows us to save hardcoding a second set of sequences
+    # for background colors.
+    #
+    # False positive.
+    # shellcheck disable=2154
+    {
+        esc SGR 7
+        palette="$e$c1 $c1 $c2 $c2 $c3 $c3 $c4 $c4 $c5 $c5 $c6 $c6 "
+        esc SGR 0
+        palette="$palette$e"
+    }
+
+    # Print the palette with a new-line before and afterwards but no seperator.
+    printf '\n' >&6
+    log "$palette
+        " " " " " >&6
+}
+
+get_ascii() {
+    # This is a simple function to read the contents of
+    # an ascii file from 'stdin'. It allows for the use
+    # of '<<-EOF' to prevent the break in indentation in
+    # this source code.
+    #
+    # This function also sets the text colors according
+    # to the ascii color.
+    read_ascii() {
+        # 'PF_COL1': Set the info name color according to ascii color.
+        # 'PF_COL3': Set the title color to some other color. ¯\_(ツ)_/¯
+        PF_COL1=${PF_COL1:-${1:-7}}
+        PF_COL3=${PF_COL3:-$((${1:-7}%8+1))}
+
+        # POSIX sh has no 'var+=' so 'var=${var}append' is used. What's
+        # interesting is that 'var+=' _is_ supported inside '$(())'
+        # (arithmetic) though there's no support for 'var++/var--'.
+        #
+        # There is also no $'\n' to add a "literal"(?) newline to the
+        # string. The simplest workaround being to break the line inside
+        # the string (though this has the caveat of breaking indentation).
+        while IFS= read -r line; do
+            ascii="$ascii$line
+"
+        done
+    }
+
+    # This checks for ascii art in the following order:
+    # '$1':        Argument given to 'get_ascii()' directly.
+    # '$PF_ASCII': Environment variable set by user.
+    # '$distro':   The detected distribution name.
+    # '$os':       The name of the operating system/kernel.
+    #
+    # NOTE: Each ascii art below is indented using tabs, this
+    #       allows indentation to continue naturally despite
+    #       the use of '<<-EOF'.
+    #
+    # False positive.
+    # shellcheck disable=2154
+    case ${1:-${PF_ASCII:-${distro:-$os}}} in
+        ([Aa]lpine*)
+            read_ascii 4 <<-EOF
+				${c4}   /\\ /\\
+				  /${c7}/ ${c4}\\  \\
+				 /${c7}/   ${c4}\\  \\
+				/${c7}//    ${c4}\\  \\
+				${c7}//      ${c4}\\  \\
+				         ${c4}\\
+			EOF
+        ;;
+
+        ([Aa]ndroid*)
+            read_ascii 2 <<-EOF
+				${c2}  ;,           ,;
+				${c2}   ';,.-----.,;'
+				${c2}  ,'           ',
+				${c2} /    O     O    \\
+				${c2}|                 |
+				${c2}'-----------------'
+			EOF
+        ;;
+
+        ([Aa]rch*)
+            read_ascii 4 <<-EOF
+				${c6}       /\\
+				${c6}      /  \\
+				${c6}     /\\   \\
+				${c4}    /      \\
+				${c4}   /   ,,   \\
+				${c4}  /   |  |  -\\
+				${c4} /_-''    ''-_\\
+			EOF
+        ;;
+
+        ([Aa]rco*)
+            read_ascii 4 <<-EOF
+				${c4}      /\\
+				${c4}     /  \\
+				${c4}    / /\\ \\
+				${c4}   / /  \\ \\
+				${c4}  / /    \\ \\
+				${c4} / / _____\\ \\
+				${c4}/_/  \`----.\\_\\
+			EOF
+        ;;
+
+        ([Aa]rtix*)
+            read_ascii 6 <<-EOF
+				${c4}      /\\
+				${c4}     /  \\
+				${c4}    /\`'.,\\
+				${c4}   /     ',
+				${c4}  /      ,\`\\
+				${c4} /   ,.'\`.  \\
+				${c4}/.,'\`     \`'.\\
+			EOF
+        ;;
+
+        ([Bb]edrock*)
+            read_ascii 4 <<-EOF
+				${c7}__
+				${c7}\\ \\___
+				${c7} \\  _ \\
+				${c7}  \\___/
+			EOF
+        ;;
+
+        ([Bb]uildroot*)
+            read_ascii 3 <<-EOF
+				${c3}   ___
+				${c3} / \`   \\
+				${c3}|   :  :|
+				${c3}-. _:__.-
+				${c3}  \` ---- \`
+			EOF
+        ;;
+
+        ([Cc]el[Oo][Ss]*)
+            read_ascii 5 0 <<-EOF
+				${c5}      .////\\\\\//\\.
+				${c5}     //_         \\\\
+				${c5}    /_  ${c7}##############
+				${c5}   //              *\\
+				${c7}###############    ${c5}|#
+				${c5}   \/              */
+				${c5}    \*   ${c7}##############
+				${c5}     */,        .//
+				${c5}      '_///\\\\\//_'
+			EOF
+        ;;
+
+        ([Cc]ent[Oo][Ss]*)
+            read_ascii 5 <<-EOF
+				${c2} ____${c3}^${c5}____
+				${c2} |\\  ${c3}|${c5}  /|
+				${c2} | \\ ${c3}|${c5} / |
+				${c5}<---- ${c4}---->
+				${c4} | / ${c2}|${c3} \\ |
+				${c4} |/__${c2}|${c3}__\\|
+				${c2}     v
+			EOF
+        ;;
+
+        ([Cc]rystal*[Ll]inux)
+            read_ascii 5 5 <<-EOF
+				${c5}        -//.     
+				${c5}      -//.       
+				${c5}    -//. .       
+				${c5}  -//.  '//-     
+				${c5} /+:      :+/    
+				${c5}  .//'  .//.     
+				${c5}    . .//.       
+				${c5}    .//.         
+				${c5}  .//.           
+			EOF
+        ;;
+
+        ([Dd]ahlia*)
+            read_ascii 1 <<-EOF
+				${c1}      _
+				${c1}  ___/ \\___
+				${c1} |   _-_   |
+				${c1} | /     \ |
+				${c1}/ |       | \\
+				${c1}\\ |       | /
+				${c1} | \ _ _ / |
+				${c1} |___ - ___|
+				${c1}     \\_/
+			EOF
+        ;;
+
+        ([Dd]ebian*)
+            read_ascii 1 <<-EOF
+				${c1}  _____
+				${c1} /  __ \\
+				${c1}|  /    |
+				${c1}|  \\___-
+				${c1}-_
+				${c1}  --_
+			EOF
+        ;;
+
+		([Dd]evuan*)
+			read_ascii 6 <<-EOF
+				${c4} ..:::.      
+				${c4}    ..-==-   
+				${c4}        .+#: 
+				${c4}         =@@ 
+				${c4}      :+%@#: 
+				${c4}.:=+#@@%*:   
+				${c4}#@@@#=:      
+			EOF
+		;;
+
+        ([Dd]ragon[Ff]ly*)
+            read_ascii 1 <<-EOF
+				    ,${c1}_${c7},
+				 ('-_${c1}|${c7}_-')
+				  >--${c1}|${c7}--<
+				 (_-'${c1}|${c7}'-_)
+				     ${c1}|
+				     ${c1}|
+				     ${c1}|
+			EOF
+        ;;
+
+        ([Ee]lementary*)
+            read_ascii <<-EOF
+				${c7}  _______
+				${c7} / ____  \\
+				${c7}/  |  /  /\\
+				${c7}|__\\ /  / |
+				${c7}\\   /__/  /
+				 ${c7}\\_______/
+			EOF
+        ;;
+
+        ([Ee]ndeavour*)
+            read_ascii 4 <<-EOF
+				      ${c1}/${c4}\\
+				    ${c1}/${c4}/  \\${c6}\\
+				   ${c1}/${c4}/    \\ ${c6}\\
+				 ${c1}/ ${c4}/     _) ${c6})
+				${c1}/_${c4}/___-- ${c6}__-
+				 ${c6}/____--
+			EOF
+        ;;
+
+        ([Ff]edora*)
+            read_ascii 4 <<-EOF
+				        ${c4},'''''.
+				       ${c4}|   ,.  |
+				       ${c4}|  |  '_'
+				${c4}  ,....|  |..
+				${c4}.'  ,_;|   ..'
+				${c4}|  |   |  |
+				${c4}|  ',_,'  |
+				${c4} '.     ,'
+				   ${c4}'''''
+			EOF
+        ;;
+
+        ([Ff]ree[Bb][Ss][Dd]*)
+            read_ascii 1 <<-EOF
+				${c1}/\\,-'''''-,/\\
+				${c1}\\_)       (_/
+				${c1}|           |
+				${c1}|           |
+				 ${c1};         ;
+				  ${c1}'-_____-'
+			EOF
+        ;;
+
+        ([Gg]aruda*)
+            read_ascii 4 <<-EOF
+				${c3}         _______
+				${c3}      __/       \\_
+				${c3}    _/     /      \\_
+				${c7}  _/      /_________\\
+				${c7}_/                  |
+				${c2}\\     ____________
+				${c2} \\_            __/
+				${c2}   \\__________/
+			EOF
+        ;;
+
+        ([Gg]entoo*)
+            read_ascii 5 <<-EOF
+				${c5} _-----_
+				${c5}(       \\
+				${c5}\\    0   \\
+				${c7} \\        )
+				${c7} /      _/
+				${c7}(     _-
+				${c7}\\____-
+			EOF
+        ;;
+
+        ([Gg][Nn][Uu]*)
+            read_ascii 3 <<-EOF
+				${c2}    _-\`\`-,   ,-\`\`-_
+				${c2}  .'  _-_|   |_-_  '.
+				${c2}./    /_._   _._\\    \\.
+				${c2}:    _/_._\`:'_._\\_    :
+				${c2}\\:._/  ,\`   \\   \\ \\_.:/
+				${c2}   ,-';'.@)  \\ @) \\
+				${c2}   ,'/'  ..- .\\,-.|
+				${c2}   /'/' \\(( \\\` ./ )
+				${c2}    '/''  \\_,----'
+				${c2}      '/''   ,;/''
+				${c2}         \`\`;'
+			EOF
+        ;;
+
+        ([Gg]uix[Ss][Dd]*|[Gg]uix*)
+            read_ascii 3 <<-EOF
+				${c3}|.__          __.|
+				${c3}|__ \\        / __|
+				   ${c3}\\ \\      / /
+				    ${c3}\\ \\    / /
+				     ${c3}\\ \\  / /
+				      ${c3}\\ \\/ /
+				       ${c3}\\__/
+			EOF
+        ;;
+
+        ([Hh]aiku*)
+            read_ascii 3 <<-EOF
+				${c3}       ,^,
+				 ${c3}     /   \\
+				${c3}*--_ ;     ; _--*
+				${c3}\\   '"     "'   /
+				 ${c3}'.           .'
+				${c3}.-'"         "'-.
+				 ${c3}'-.__.   .__.-'
+				       ${c3}|_|
+			EOF
+        ;;
+
+        ([Hh]ydroOS*)
+			read_ascii 4 <<-EOF
+				${c1}╔╗╔╗──╔╗───╔═╦══╗
+				${c1}║╚╝╠╦╦╝╠╦╦═╣║║══╣
+				${c1}║╔╗║║║╬║╔╣╬║║╠══║
+				${c1}╚╝╚╬╗╠═╩╝╚═╩═╩══╝
+				${c1}───╚═╝
+			EOF
+        ;;
+
+        ([Hh]yperbola*)
+            read_ascii <<-EOF
+				${c7}    |\`__.\`/
+				   ${c7} \____/
+				   ${c7} .--.
+				  ${c7} /    \\
+				 ${c7} /  ___ \\
+				 ${c7}/ .\`   \`.\\
+				${c7}/.\`      \`.\\
+			EOF
+        ;;
+
+        ([Ii]glunix*)
+            read_ascii <<-EOF
+				${c0}       |
+				${c0}       |          |
+				${c0}                  |
+				${c0}  |    ________
+				${c0}  |  /\\   |    \\
+				${c0}    /  \\  |     \\  |
+				${c0}   /    \\        \\ |
+				${c0}  /      \\________\\
+				${c0}  \\      /        /
+				${c0}   \\    /        /
+				${c0}    \\  /        /
+				${c0}     \\/________/
+			EOF
+        ;;
+
+        ([Ii]nstant[Oo][Ss]*)
+            read_ascii <<-EOF
+				${c0} ,-''-,
+				${c0}: .''. :
+				${c0}: ',,' :
+				${c0} '-____:__
+				${c0}       :  \`.
+				${c0}       \`._.'
+			EOF
+        ;;
+
+        ([Ii][Rr][Ii][Xx]*)
+            read_ascii 1 <<-EOF
+				${c1} __
+				${c1} \\ \\   __
+				${c1}  \\ \\ / /
+				${c1}   \\ v /
+				${c1}   / . \\
+				${c1}  /_/ \\ \\
+				${c1}       \\_\\
+			EOF
+        ;;
+
+        ([Kk][Dd][Ee]*[Nn]eon*)
+            read_ascii 6 <<-EOF
+				${c7}   .${c6}__${c7}.${c6}__${c7}.
+				${c6}  /  _${c7}.${c6}_  \\
+				${c6} /  /   \\  \\
+				${c7} . ${c6}|  ${c7}O${c6}  | ${c7}.
+				${c6} \\  \\_${c7}.${c6}_/  /
+				${c6}  \\${c7}.${c6}__${c7}.${c6}__${c7}.${c6}/
+			EOF
+        ;;
+
+        ([Ll]inux*[Ll]ite*|[Ll]ite*)
+            read_ascii 3 <<-EOF
+				${c3}   /\\
+				${c3}  /  \\
+				${c3} / ${c7}/ ${c3}/
+			${c3}> ${c7}/ ${c3}/
+				${c3}\\ ${c7}\\ ${c3}\\
+				 ${c3}\\_${c7}\\${c3}_\\
+				${c7}    \\
+			EOF
+        ;;
+
+        ([Ll]inux*[Mm]int*|[Mm]int)
+            read_ascii 2 <<-EOF
+				${c2} ___________
+				${c2}|_          \\
+				  ${c2}| ${c7}| _____ ${c2}|
+				  ${c2}| ${c7}| | | | ${c2}|
+				  ${c2}| ${c7}| | | | ${c2}|
+				  ${c2}| ${c7}\\__${c7}___/ ${c2}|
+				  ${c2}\\_________/
+			EOF
+        ;;
+
+
+        ([Ll]inux*)
+            read_ascii 4 <<-EOF
+				${c4}    ___
+				   ${c4}(${c7}.. ${c4}|
+				   ${c4}(${c5}<> ${c4}|
+				  ${c4}/ ${c7}__  ${c4}\\
+				 ${c4}( ${c7}/  \\ ${c4}/|
+				${c5}_${c4}/\\ ${c7}__)${c4}/${c5}_${c4})
+				${c5}\/${c4}-____${c5}\/
+			EOF
+        ;;
+
+        ([Mm]ac[Oo][Ss]*|[Dd]arwin*)
+            read_ascii 1 <<-EOF
+				${c2}       .:'
+				${c2}    _ :'_
+				${c3} .'\`_\`-'_\`\`.
+				${c1}:________.-'
+				${c1}:_______:
+				${c4} :_______\`-;
+				${c5}  \`._.-._.'
+			EOF
+        ;;
+
+        ([Mm]ageia*)
+            read_ascii 2 <<-EOF
+				${c6}   *
+				${c6}    *
+				${c6}   **
+				${c7} /\\__/\\
+				${c7}/      \\
+				${c7}\\      /
+				${c7} \\____/
+			EOF
+        ;;
+
+        ([Mm]anjaro*)
+            read_ascii 2 <<-EOF
+				${c2}||||||||| ||||
+				${c2}||||||||| ||||
+				${c2}||||      ||||
+				${c2}|||| |||| ||||
+				${c2}|||| |||| ||||
+				${c2}|||| |||| ||||
+				${c2}|||| |||| ||||
+			EOF
+        ;;
+
+        ([Mm]inix*)
+            read_ascii 4 <<-EOF
+				${c4} ,,        ,,
+				${c4};${c7},${c4} ',    ,' ${c7},${c4};
+				${c4}; ${c7}',${c4} ',,' ${c7},'${c4} ;
+				${c4};   ${c7}',${c4}  ${c7},'${c4}   ;
+				${c4};  ${c7};, '' ,;${c4}  ;
+				${c4};  ${c7};${c4};${c7}',,'${c4};${c7};${c4}  ;
+				${c4}', ${c7};${c4};;  ;;${c7};${c4} ,'
+				 ${c4} '${c7};${c4}'    '${c7};${c4}'
+			EOF
+        ;;
+
+        ([Mm][Xx]*)
+            read_ascii <<-EOF
+				${c7}    \\\\  /
+				 ${c7}    \\\\/
+				 ${c7}     \\\\
+				 ${c7}  /\\/ \\\\
+				${c7}  /  \\  /\\
+				${c7} /    \\/  \\
+			${c7}/__________\\
+			EOF
+        ;;
+
+        ([Nn]et[Bb][Ss][Dd]*)
+            read_ascii 3 <<-EOF
+				${c7}\\\\${c3}\`-______,----__
+				${c7} \\\\        ${c3}__,---\`_
+				${c7}  \\\\       ${c3}\`.____
+				${c7}   \\\\${c3}-______,----\`-
+				${c7}    \\\\
+				${c7}     \\\\
+				${c7}      \\\\
+			EOF
+        ;;
+
+        ([Nn]ix[Oo][Ss]*)
+            read_ascii 4 <<-EOF
+				${c4}  \\\\  \\\\ //
+				${c4} ==\\\\__\\\\/ //
+				${c4}   //   \\\\//
+				${c4}==//     //==
+				${c4} //\\\\___//
+				${c4}// /\\\\  \\\\==
+				${c4}  // \\\\  \\\\
+			EOF
+        ;;
+
+        ([Oo]pen[Bb][Ss][Dd]*)
+            read_ascii 3 <<-EOF
+				${c3}      _____
+				${c3}    \\-     -/
+				${c3} \\_/         \\
+				${c3} |        ${c7}O O${c3} |
+				${c3} |_  <   )  3 )
+				${c3} / \\         /
+				 ${c3}   /-_____-\\
+			EOF
+        ;;
+
+        ([Oo]pen[Ss][Uu][Ss][Ee]*[Tt]umbleweed*)
+            read_ascii 2 <<-EOF
+				${c2}  _____   ______
+				${c2} / ____\\ / ____ \\
+				${c2}/ /    \`/ /    \\ \\
+				${c2}\\ \\____/ /,____/ /
+				${c2} \\______/ \\_____/
+			EOF
+        ;;
+
+        ([Oo]pen[Ss][Uu][Ss][Ee]*|[Oo]pen*SUSE*|SUSE*|suse*)
+            read_ascii 2 <<-EOF
+				${c2}  _______
+				${c2}__|   __ \\
+				${c2}     / .\\ \\
+				${c2}     \\__/ |
+				${c2}   _______|
+				${c2}   \\_______
+				${c2}__________/
+			EOF
+        ;;
+
+        ([Oo]pen[Ww]rt*)
+            read_ascii 1 <<-EOF
+				${c1} _______
+				${c1}|       |.-----.-----.-----.
+				${c1}|   -   ||  _  |  -__|     |
+				${c1}|_______||   __|_____|__|__|
+				${c1} ________|__|    __
+				${c1}|  |  |  |.----.|  |_
+				${c1}|  |  |  ||   _||   _|
+				${c1}|________||__|  |____|
+			EOF
+        ;;
+
+        ([Pp]arabola*)
+            read_ascii 5 <<-EOF
+				${c5}  __ __ __  _
+				${c5}.\`_//_//_/ / \`.
+				${c5}          /  .\`
+				${c5}         / .\`
+				${c5}        /.\`
+				${c5}       /\`
+			EOF
+        ;;
+
+        ([Pp]op!_[Oo][Ss]*)
+            read_ascii 6 <<-EOF
+				${c6}______
+				${c6}\\   _ \\        __
+				 ${c6}\\ \\ \\ \\      / /
+				  ${c6}\\ \\_\\ \\    / /
+				   ${c6}\\  ___\\  /_/
+				   ${c6} \\ \\    _
+				  ${c6} __\\_\\__(_)_
+				  ${c6}(___________)
+			EOF
+        ;;
+
+        ([Pp]ure[Oo][Ss]*)
+            read_ascii <<-EOF
+				${c7} _____________
+				${c7}|  _________  |
+				${c7}| |         | |
+				${c7}| |         | |
+				${c7}| |_________| |
+				${c7}|_____________|
+			EOF
+        ;;
+
+        ([Rr]aspbian*)
+            read_ascii 1 <<-EOF
+				${c2}  __  __
+				${c2} (_\\)(/_)
+				${c1} (_(__)_)
+				${c1}(_(_)(_)_)
+				${c1} (_(__)_)
+				${c1}   (__)
+			EOF
+        ;;
+
+        ([Ss]erenity[Oo][Ss]*)
+            read_ascii 4 <<-EOF
+				${c7}    _____
+				${c1}  ,-${c7}     -,
+				${c1} ;${c7} (       ;
+				${c1}| ${c7}. \_${c1}.,${c7}    |
+				${c1}|  ${c7}o  _${c1} ',${c7}  |
+				${c1} ;   ${c7}(_)${c1} )${c7} ;
+				${c1}  '-_____-${c7}'
+			EOF
+        ;;
+
+        ([Ss]lackware*)
+            read_ascii 4 <<-EOF
+				${c4}   ________
+				${c4}  /  ______|
+				${c4}  | |______
+				${c4}  \\______  \\
+				${c4}   ______| |
+				${c4}| |________/
+				${c4}|____________
+			EOF
+        ;;
+
+        ([Ss]olus*)
+            read_ascii 4 <<-EOF
+				${c6} 
+				${c6}     /|
+				${c6}    / |\\
+				${c6}   /  | \\ _
+				${c6}  /___|__\\_\\
+				${c6} \\         /
+				${c6}  \`-------´
+			EOF
+        ;;
+
+        ([Ss]un[Oo][Ss]|[Ss]olaris*)
+            read_ascii 3 <<-EOF
+				${c3}       .   .;   .
+				${c3}   .   :;  ::  ;:   .
+				${c3}   .;. ..      .. .;.
+				${c3}..  ..             ..  ..
+				${c3} .;,                 ,;.
+			EOF
+        ;;
+
+        ([Uu]buntu*)
+            read_ascii 3 <<-EOF
+				${c3}         _
+				${c3}     ---(_)
+				${c3} _/  ---  \\
+				${c3}(_) |   |
+				 ${c3} \\  --- _/
+				    ${c3} ---(_)
+			EOF
+        ;;
+
+        ([Vv]oid*)
+            read_ascii 2 <<-EOF
+				${c2}    _______
+				${c2} _ \\______ -
+				${c2}| \\  ___  \\ |
+				${c2}| | /   \ | |
+				${c2}| | \___/ | |
+				${c2}| \\______ \\_|
+				${c2} -_______\\
+			EOF
+        ;;
+
+        ([Xx]eonix*)
+            read_ascii 2 <<-EOF
+				${c2}    ___  ___
+				${c2}___ \  \/  / ___
+				${c2}\  \ \    / /  /
+				${c2} \  \/    \/  /
+				${c2}  \    /\    /
+				${c2}   \__/  \__/
+			EOF
+        ;;
+
+        (*)
+            # On no match of a distribution ascii art, this function calls
+            # itself again, this time to look for a more generic OS related
+            # ascii art (KISS Linux -> Linux).
+            [ "$1" ] || {
+                get_ascii "$os"
+                return
+            }
+
+            printf 'error: %s is not currently supported.\n' "$os" >&6
+            printf 'error: Open an issue for support to be added.\n' >&6
+            exit 1
+        ;;
+    esac
+
+    # Store the "width" (longest line) and "height" (number of lines)
+    # of the ascii art for positioning. This script prints to the screen
+    # *almost* like a TUI does. It uses escape sequences to allow dynamic
+    # printing of the information through user configuration.
+    #
+    # Iterate over each line of the ascii art to retrieve the above
+    # information. The 'sed' is used to strip '\033[3Xm' color codes from
+    # the ascii art so they don't affect the width variable.
+    while read -r line; do
+        ascii_height=$((${ascii_height:-0} + 1))
+
+        # This was a ternary operation but they aren't supported in
+        # Minix's shell.
+        [ "${#line}" -gt "${ascii_width:-0}" ] &&
+            ascii_width=${#line}
+
+    # Using '<<-EOF' is the only way to loop over a command's
+    # output without the use of a pipe ('|').
+    # This ensures that any variables defined in the while loop
+    # are still accessible in the script.
+    done <<-EOF
+ 		$(printf %s "$ascii" | sed 's/\[3.m//g')
+	EOF
+
+    # Add a gap between the ascii art and the information.
+    ascii_width=$((ascii_width + 4))
+
+    # Print the ascii art and position the cursor back where we
+    # started prior to printing it.
+    {
+        esc_p SGR 1
+        printf '%s' "$ascii"
+        esc_p SGR 0
+        esc_p CUU "$ascii_height"
+    } >&6
+}
+
+main() {
+    case $* in
+        -v)
+            printf '%s 0.7.0\n' "${0##*/}"
+            return 0
+        ;;
+
+        -d)
+            # Below exec is not run, stderr is shown.
+        ;;
+
+        '')
+            exec 2>/dev/null
+        ;;
+
+        *)
+            cat <<EOF
+${0##*/}     show system information
+${0##*/} -d  show stderr (debug mode)
+${0##*/} -v  show version information
+EOF
+            return 0
+        ;;
+    esac
+
+    # Hide 'stdout' and selectively print to it using '>&6'.
+    # This gives full control over what it displayed on the screen.
+    exec 6>&1 >/dev/null
+
+    # Store raw escape sequence character for later reuse.
+    esc_c=$(printf '\033')
+
+    # Allow the user to execute their own script and modify or
+    # extend pfetch's behavior.
+    # shellcheck source=/dev/null
+    ! [ -f "$PF_SOURCE" ] || . "$PF_SOURCE"
+
+    # Ensure that the 'TMPDIR' is writable as heredocs use it and
+    # fail without the write permission. This was found to be the
+    # case on Android where the temporary directory requires root.
+    [ -w "${TMPDIR:-/tmp}" ] || export TMPDIR=~
+
+    # Generic color list.
+    # Disable warning about unused variables.
+    # shellcheck disable=2034
+    for _c in c1 c2 c3 c4 c5 c6 c7 c8; do
+        esc SGR "3${_c#?}" 0
+        export "$_c=$e"
+    done
+
+    # Disable line wrapping and catch the EXIT signal to enable it again
+    # on exit. Ideally you'd somehow query the current value and retain
+    # it but I'm yet to see this irk anyone.
+    esc_p DECAWM l >&6
+    trap 'esc_p DECAWM h >&6' EXIT
+
+    # Store the output of 'uname' to avoid calling it multiple times
+    # throughout the script. 'read <<EOF' is the simplest way of reading
+    # a command into a list of variables.
+    read -r os kernel arch <<-EOF
+		$(uname -srm)
+	EOF
+
+    # Always run 'get_os' for the purposes of detecting which ascii
+    # art to display.
+    get_os
+
+    # Allow the user to specify the order and inclusion of information
+    # functions through the 'PF_INFO' environment variable.
+    # shellcheck disable=2086
+    {
+        # Disable globbing and set the positional parameters to the
+        # contents of 'PF_INFO'.
+        set -f
+        set +f -- ${PF_INFO-ascii title os host kernel uptime pkgs memory}
+
+        # Iterate over the info functions to determine the lengths of the
+        # "info names" for output alignment. The option names and subtitles
+        # match 1:1 so this is thankfully simple.
+        for info do
+            command -v "get_$info" >/dev/null || continue
+
+            # This was a ternary operation but they aren't supported in
+            # Minix's shell.
+            [ "${#info}" -gt "${info_length:-0}" ] &&
+                info_length=${#info}
+        done
+
+        # Add an additional space of length to act as a gap.
+        info_length=$((info_length + 1))
+
+        # Iterate over the above list and run any existing "get_" functions.
+        for info do
+            "get_$info"
+        done
+    }
+
+    # Position the cursor below both the ascii art and information lines
+    # according to the height of both. If the information exceeds the ascii
+    # art in height, don't touch the cursor (0/unset), else move it down
+    # N lines.
+    #
+    # This was a ternary operation but they aren't supported in Minix's shell.
+    [ "${info_height:-0}" -lt "${ascii_height:-0}" ] &&
+        cursor_pos=$((ascii_height - info_height))
+
+    # Print '$cursor_pos' amount of newlines to correctly position the
+    # cursor. This used to be a 'printf $(seq X X)' however 'seq' is only
+    # typically available (by default) on GNU based systems!
+    while [ "${i:=0}" -le "${cursor_pos:-0}" ]; do
+        printf '\n'
+        i=$((i + 1))
+    done >&6
+}
+
+main "$@"