fet.sh - dotfiles - These are my dotfiles. There are many like it, but these are mine.
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---
fet.sh (7119B)
---
1 #!/bin/sh
2 #
3 # fet.sh
4 # a fetch in pure POSIX shell
5 #
6
7 # supress errors
8 exec 2>/dev/null
9 set --
10 eq() { # equals | [ a = b ] with globbing
11 case $1 in
12 $2) ;;
13 *) return 1;;
14 esac
15 }
16
17 ## DE
18 wm=$XDG_CURRENT_DESKTOP
19 [ "$wm" ] || wm=$DESKTOP_SESSION
20
21 ## Distro
22 # freedesktop.org/software/systemd/man/os-release.html
23 # a common file that has variables about the distro
24 for os in /etc/os-release /usr/lib/os-release; do
25 # some POSIX shells exit when trying to source a file that doesn't exist
26 [ -f $os ] && . $os && break
27 done
28
29 if [ -e /proc/$$/comm ]; then
30 ## Terminal
31 while [ ! "$term" ]; do
32 # loop over lines in /proc/pid/status until it reaches PPid
33 # then save that to a variable and exit the file
34 while read -r line; do
35 eq "$line" 'PPid*' && ppid=${line##*:?} && break
36 done < "/proc/${ppid:-$PPID}/status"
37
38 # Make sure not to do an infinite loop
39 [ "$pppid" = "$ppid" ] && break
40 pppid=$ppid
41
42 # get name of binary
43 read -r name < "/proc/$ppid/comm"
44
45 case $name in
46 *sh|"${0##*/}") ;; # skip shells
47 *[Ll]ogin*|*init|*systemd*) break;; # exit when the top is reached
48 # anything else can be assumed to be the terminal
49 # this has the side affect of catching tmux, but tmux
50 # detaches from the terminal and therefore ignoring that
51 # will just make the init the term
52 *) term=$name
53 esac
54 done
55
56 ## WM/DE
57 [ "$wm" ] ||
58 # loop over all processes and check the binary name
59 for i in /proc/*/comm; do
60 read -r c < "$i"
61 case $c in
62 *bar*|*rc) ;;
63 awesome|xmonad*|qtile|sway|i3|[bfo]*box|*wm*) wm=${c%%-*}; break;;
64 esac
65 done
66
67 ## Memory
68 # loop over lines in /proc/meminfo until it reaches MemTotal,
69 # then convert the amount (second word) from KB to MB
70 while read -r line; do
71 eq "$line" 'MemTotal*' && set -- $line && break
72 done < /proc/meminfo
73 mem="$(( $2 / 1000 ))MB"
74
75 ## Processor
76 while read -r line; do
77 case $line in
78 vendor_id*) vendor="${line##*: } ";;
79 model\ name*) cpu=${line##*: }; break;;
80 esac
81 done < /proc/cpuinfo
82
83 ## Uptime
84 # the simple math is shamefully stolen from aosync
85 IFS=. read -r uptime _ < /proc/uptime
86 d=$((uptime / 60 / 60 / 24))
87 up=$(printf %02d:%02d $((uptime / 60 / 60 % 24)) $((uptime / 60 % 60)))
88 [ "$d" -gt 0 ] && up="${d}d $up"
89
90 ## Kernel
91 read -r _ _ version _ < /proc/version
92 kernel=${version%%-*}
93 eq "$version" '*Microsoft*' && ID="fake $ID"
94
95 ## Motherboard // laptop
96 read -r model < /sys/devices/virtual/dmi/id/product_name
97 # invalid model handling
98 case $model in
99 # alternate file with slightly different info
100 # on my laptop it has the device model (instead of 'hp notebook')
101 # on my desktop it has the extended motherboard model
102 'System '*|'Default '*|'To Be Filled'*)
103 read -r model < /sys/devices/virtual/dmi/id/board_name
104 esac
105
106 ## Packages
107 # clean environment, then make every file in the dir an argument,
108 # then save the argument count to $pkgs
109 set --
110 # kiss, arch, debian, void, gentoo
111 for i in '/var/db/kiss/installed/*' '/var/lib/pacman/local/[0-9a-z]*' \
112 '/var/lib/dpkg/info/*.list' '/var/db/xbps/.*' '/var/db/pkg/*/*'; do
113 set -- $i
114 [ $# -gt 1 ] && pkgs=$# && break
115 done
116
117 read -r host < /proc/sys/kernel/hostname
118 elif [ -f /var/run/dmesg.boot ]; then
119 # Both OpenBSD and FreeBSD use this file, however they're formatted differently
120 read -r bsd < /var/run/dmesg.boot
121 case $bsd in
122 Open*)
123 ## OpenBSD cpu/mem/name
124 while read -r line; do
125 case $line in
126 'real mem'*)
127 # use the pre-formatted value which is in brackets
128 mem=${line##*\(}
129 mem=${mem%\)*}
130 ;;
131 # set $cpu to everything before a comma and after the field name
132 cpu0:*)
133 cpu=${line#cpu0: }
134 # Remove excess info after the actual CPU name
135 cpu=${cpu%%,*}
136 # Set the CPU Manufacturer to the first word of the cpu
137 # variable [separated by '(' or ' ']
138 vendor=${cpu%%[\( ]*}
139 # We got all the info we want, stop reading
140 break
141 ;;
142 # First 2 words in the file are OpenBSD <version>
143 *) [ "$ID" ] || { set -- $line; ID="$1 $2"; }
144 esac
145 done < /var/run/dmesg.boot
146 [ -d /var/db/pkg ] && set -- /var/db/pkg/* && pkgs=$#
147 read -r host < /etc/myname
148 host=${host%.*}
149 ;;
150 # Everything else, assume FreeBSD (first line is ---<<BOOT>> or something)
151 *)
152 # shellcheck source=/dev/null
153 . /etc/rc.conf
154 # shut shellcheck up without disabling the warning
155 host=${hostname:-}
156
157 while read -r line; do
158 case $line in
159 # os version
160 FreeBSD*)
161 # If the OS is already set, no need to set it again
162 [ "$ID" ] && continue
163 ID=${line%%-R*}
164 ;;
165
166 CPU:*)
167 cpu=${cpu#CPU: }
168 # Remove excess info from after the actual CPU name
169 cpu=${line%\(*}
170 ;;
171 *Origin=*)
172 # CPU Manufacturer
173 vendor=${line#*Origin=\"}
174 vendor="${vendor%%\"*} "
175 ;;
176
177 'real memory'*)
178 # Get the pre-formatted amount which is inside brackets
179 mem=${line##*\(}
180 mem=${mem%\)*}
181 # This appears to be the final thing we need from the file,
182 # no need to read it more.
183 break
184 esac
185 done < /var/run/dmesg.boot
186 ;;
187 esac
188 elif v=/System/Library/CoreServices/SystemVersion.plist; [ -f "$v" ]; then
189 ## Macos
190 # make sure this variable is empty as to not break the following loop
191 temp=
192 while read -r line; do
193 case $line in
194 # set a variable so the script knows it's on the correct line
195 # (the line after this one is the important one)
196 *ProductVersion*) temp=.;;
197 *)
198 # check if the script is reading the derired line, if not
199 # don't do anything
200 [ "$temp" ] || continue
201 # Remove everything before and including the first '>'
202 ID=${line#*>}
203 # Remove the other side of the XML tag, and insert the actual OS name
204 ID="MacOS ${ID%<*}"
205 # We got the info we want, end the loop.
206 break
207 esac
208 done < "$v"
209 fi
210
211 eq "$0" '*fetish' && printf 'Step on me daddy\n' && exit
212
213 # help i dont know if it's a capital consistently
214 eq "$wm" '*[Gg][Nn][Oo][Mm][Ee]*' && wm='foot DE'
215
216 ## GTK
217 while read -r line; do
218 eq "$line" 'gtk-theme*' && gtk=${line##*=} && break
219 done < "${XDG_CONFIG_HOME:=$HOME/.config}/gtk-3.0/settings.ini"
220
221 # Shorten $cpu and $vendor
222 # this is so messy due to so many inconsistencies in the model names
223 vendor=${vendor##*Authentic}
224 vendor=${vendor##*Genuine}
225 cpu=${cpu##*) }
226 cpu=${cpu%% @*}
227 cpu=${cpu%% CPU}
228 cpu=${cpu##CPU }
229 cpu=${cpu##*AMD }
230 cpu=${cpu%% with*}
231 cpu=${cpu% *-Core*}
232
233 col() {
234 printf ' '
235 for i in 1 2 3 4 5 6; do
236 printf '\033[9%sm%s' "$i" "${colourblocks:-▅▅}"
237 done
238 printf '\033[0m\n'
239 }
240
241 print() {
242 [ "$2" ] && printf '\033[9%sm%6s\033[0m%b%s\n' \
243 "${accent:-4}" "$1" "${separator:- ~ }" "$2"
244 }
245
246 # default value
247 : "${info:=n user os sh wm up gtk cpu mem host kern pkgs term col n}"
248
249 for i in $info; do
250 case $i in
251 n) echo;;
252 os) print os "$ID";;
253 sh) print sh "${SHELL##*/}";;
254 wm) print wm "${wm##*/}";;
255 up) print up "$up";;
256 gtk) print gtk "${gtk# }";;
257 cpu) print cpu "$vendor$cpu";;
258 mem) print mem "$mem";;
259 host) print host "$model";;
260 kern) print kern "$kernel";;
261 pkgs) print pkgs "$pkgs";;
262 term) print term "$term";;
263 user) printf '%7s@%s\n' "$USER" "$host";;
264 col) col;;
265 esac
266 done