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#!/bin/sh
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#
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# fet.sh
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# a fetch in pure POSIX shell
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#
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# supress errors
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exec 2>/dev/null
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set --
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eq() { # equals | [ a = b ] with globbing
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case $1 in
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$2) ;;
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*) return 1;;
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esac
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}
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## DE
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wm=$XDG_CURRENT_DESKTOP
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[ "$wm" ] || wm=$DESKTOP_SESSION
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## Distro
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# freedesktop.org/software/systemd/man/os-release.html
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# a common file that has variables about the distro
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for os in /etc/os-release /usr/lib/os-release; do
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# some POSIX shells exit when trying to source a file that doesn't exist
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[ -f $os ] && . $os && break
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done
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if [ -e /proc/$$/comm ]; then
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## Terminal
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while [ ! "$term" ]; do
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# loop over lines in /proc/pid/status until it reaches PPid
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# then save that to a variable and exit the file
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while read -r line; do
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eq "$line" 'PPid*' && ppid=${line##*:?} && break
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done < "/proc/${ppid:-$PPID}/status"
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# Make sure not to do an infinite loop
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[ "$pppid" = "$ppid" ] && break
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pppid=$ppid
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# get name of binary
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read -r name < "/proc/$ppid/comm"
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case $name in
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*sh|"${0##*/}") ;; # skip shells
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*[Ll]ogin*|*init|*systemd*) break;; # exit when the top is reached
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# anything else can be assumed to be the terminal
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# this has the side affect of catching tmux, but tmux
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# detaches from the terminal and therefore ignoring that
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# will just make the init the term
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*) term=$name
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esac
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done
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## WM/DE
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[ "$wm" ] ||
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# loop over all processes and check the binary name
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for i in /proc/*/comm; do
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read -r c < "$i"
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case $c in
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*bar*|*rc) ;;
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awesome|xmonad*|qtile|sway|i3|[bfo]*box|*wm*) wm=${c%%-*}; break;;
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esac
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done
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## Memory
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# loop over lines in /proc/meminfo until it reaches MemTotal,
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# then convert the amount (second word) from KB to MB
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while read -r line; do
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eq "$line" 'MemTotal*' && set -- $line && break
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done < /proc/meminfo
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mem="$(( $2 / 1000 ))MB"
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## Processor
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while read -r line; do
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case $line in
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vendor_id*) vendor="${line##*: } ";;
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model\ name*) cpu=${line##*: }; break;;
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esac
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done < /proc/cpuinfo
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## Uptime
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# the simple math is shamefully stolen from aosync
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IFS=. read -r uptime _ < /proc/uptime
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d=$((uptime / 60 / 60 / 24))
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up=$(printf %02d:%02d $((uptime / 60 / 60 % 24)) $((uptime / 60 % 60)))
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[ "$d" -gt 0 ] && up="${d}d $up"
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## Kernel
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read -r _ _ version _ < /proc/version
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kernel=${version%%-*}
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eq "$version" '*Microsoft*' && ID="fake $ID"
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## Motherboard // laptop
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read -r model < /sys/devices/virtual/dmi/id/product_name
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# invalid model handling
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case $model in
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# alternate file with slightly different info
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# on my laptop it has the device model (instead of 'hp notebook')
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# on my desktop it has the extended motherboard model
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'System '*|'Default '*|'To Be Filled'*)
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read -r model < /sys/devices/virtual/dmi/id/board_name
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esac
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## Packages
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# clean environment, then make every file in the dir an argument,
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# then save the argument count to $pkgs
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set --
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# kiss, arch, debian, void, gentoo
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for i in '/var/db/kiss/installed/*' '/var/lib/pacman/local/[0-9a-z]*' \
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'/var/lib/dpkg/info/*.list' '/var/db/xbps/.*' '/var/db/pkg/*/*'; do
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set -- $i
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[ $# -gt 1 ] && pkgs=$# && break
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done
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read -r host < /proc/sys/kernel/hostname
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elif [ -f /var/run/dmesg.boot ]; then
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# Both OpenBSD and FreeBSD use this file, however they're formatted differently
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read -r bsd < /var/run/dmesg.boot
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case $bsd in
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Open*)
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## OpenBSD cpu/mem/name
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while read -r line; do
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case $line in
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'real mem'*)
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# use the pre-formatted value which is in brackets
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mem=${line##*\(}
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mem=${mem%\)*}
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;;
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# set $cpu to everything before a comma and after the field name
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cpu0:*)
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cpu=${line#cpu0: }
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# Remove excess info after the actual CPU name
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cpu=${cpu%%,*}
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# Set the CPU Manufacturer to the first word of the cpu
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# variable [separated by '(' or ' ']
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vendor=${cpu%%[\( ]*}
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# We got all the info we want, stop reading
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break
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;;
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# First 2 words in the file are OpenBSD <version>
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*) [ "$ID" ] || { set -- $line; ID="$1 $2"; }
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esac
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done < /var/run/dmesg.boot
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[ -d /var/db/pkg ] && set -- /var/db/pkg/* && pkgs=$#
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read -r host < /etc/myname
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host=${host%.*}
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;;
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# Everything else, assume FreeBSD (first line is ---<<BOOT>> or something)
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*)
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# shellcheck source=/dev/null
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. /etc/rc.conf
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# shut shellcheck up without disabling the warning
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host=${hostname:-}
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while read -r line; do
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case $line in
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# os version
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FreeBSD*)
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# If the OS is already set, no need to set it again
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[ "$ID" ] && continue
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ID=${line%%-R*}
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;;
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CPU:*)
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cpu=${cpu#CPU: }
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# Remove excess info from after the actual CPU name
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cpu=${line%\(*}
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;;
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*Origin=*)
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# CPU Manufacturer
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vendor=${line#*Origin=\"}
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vendor="${vendor%%\"*} "
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;;
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'real memory'*)
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# Get the pre-formatted amount which is inside brackets
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mem=${line##*\(}
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mem=${mem%\)*}
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# This appears to be the final thing we need from the file,
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# no need to read it more.
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break
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esac
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done < /var/run/dmesg.boot
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;;
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esac
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elif v=/System/Library/CoreServices/SystemVersion.plist; [ -f "$v" ]; then
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## Macos
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# make sure this variable is empty as to not break the following loop
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temp=
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while read -r line; do
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case $line in
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# set a variable so the script knows it's on the correct line
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# (the line after this one is the important one)
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*ProductVersion*) temp=.;;
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*)
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# check if the script is reading the derired line, if not
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# don't do anything
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[ "$temp" ] || continue
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# Remove everything before and including the first '>'
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ID=${line#*>}
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# Remove the other side of the XML tag, and insert the actual OS name
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ID="MacOS ${ID%<*}"
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# We got the info we want, end the loop.
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break
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esac
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done < "$v"
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fi
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eq "$0" '*fetish' && printf 'Step on me daddy\n' && exit
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# help i dont know if it's a capital consistently
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eq "$wm" '*[Gg][Nn][Oo][Mm][Ee]*' && wm='foot DE'
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## GTK
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while read -r line; do
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eq "$line" 'gtk-theme*' && gtk=${line##*=} && break
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done < "${XDG_CONFIG_HOME:=$HOME/.config}/gtk-3.0/settings.ini"
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# Shorten $cpu and $vendor
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# this is so messy due to so many inconsistencies in the model names
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vendor=${vendor##*Authentic}
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vendor=${vendor##*Genuine}
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cpu=${cpu##*) }
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cpu=${cpu%% @*}
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cpu=${cpu%% CPU}
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cpu=${cpu##CPU }
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cpu=${cpu##*AMD }
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cpu=${cpu%% with*}
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cpu=${cpu% *-Core*}
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col() {
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printf ' '
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for i in 1 2 3 4 5 6; do
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printf '\033[9%sm%s' "$i" "${colourblocks:-▅▅}"
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done
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printf '\033[0m\n'
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}
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print() {
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[ "$2" ] && printf '\033[9%sm%6s\033[0m%b%s\n' \
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"${accent:-4}" "$1" "${separator:- ~ }" "$2"
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}
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# default value
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: "${info:=n user os sh wm up gtk cpu mem host kern pkgs term col n}"
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for i in $info; do
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case $i in
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n) echo;;
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os) print os "$ID";;
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sh) print sh "${SHELL##*/}";;
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wm) print wm "${wm##*/}";;
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up) print up "$up";;
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gtk) print gtk "${gtk# }";;
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cpu) print cpu "$vendor$cpu";;
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mem) print mem "$mem";;
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host) print host "$model";;
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kern) print kern "$kernel";;
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pkgs) print pkgs "$pkgs";;
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term) print term "$term";;
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user) printf '%7s@%s\n' "$USER" "$host";;
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col) col;;
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esac
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done
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