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polybar: kill itself if one instance is missing

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This commit is contained in:
Vincent Bernat 2021-08-22 08:59:43 +02:00
parent e54dcc7e6f
commit 2f74d47a74
2 changed files with 11 additions and 2 deletions
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9
bin/polybar
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@ -5,14 +5,16 @@ export HEIGHT=$((18 * DPI / 96))
MONITORS=$(polybar --list-monitors | sed -nE 's/([^ ]+): .*/\1/p' | tr '\n' ' ')
PRIMARY=$(polybar --list-monitors | grep -F '(primary)' | sed -nE 's/([^ ]+): .*/\1/p')
NMONITORS=$(echo $MONITORS | wc -w)
PRIMARY=${PRIMARY:-${MONITORS%% *}}
awk 'BEGIN { i=0 } ($4 == "/" && $3 !~ /^0:/) {print "mount-"i" = "$5; i++}' /proc/self/mountinfo \
> $XDG_RUNTIME_DIR/i3/polybar-filesystems.conf
case $(echo $MONITORS | wc -w) in
case $NMONITORS in
1)
MONITOR=$PRIMARY polybar --reload alone &
systemd-notify --status="Single polybar instance running on $PRIMARY"
;;
*)
MONITOR=$PRIMARY polybar --reload primary &
@ -20,5 +22,10 @@ case $(echo $MONITORS | wc -w) in
[ $MONITOR != $PRIMARY ] || continue
MONITOR=$MONITOR polybar --reload secondary &
done
systemd-notify --status="$NMONITORS polybar instances running"
;;
esac
systemd-notify --ready
trap "systemd-notify WATCHDOG=trigger" CHLD
wait