dotfiles-old/.local/bin/svlogtail

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#!/bin/sh
#copied from: https://github.com/void-linux/socklog-void/blob/master/svlogtail
usage () {
cat <<-'EOF'
svlogtail [-f] [LOG...] - show svlogd logs conveniently
Without arguments, show current logs of all services, uniquely.
With arguments, show all logs of mentioned services
With -f, follow log output.
EOF
}
globexist() {
[ -f "$1" ]
}
IFS='
'
fflag=false
if [ "$1" = -f ]; then
shift
fflag=true
fi
if [ $# = 0 ]; then
cat /var/log/socklog/*/current | sort -u
if $fflag; then
tail -Fq -n0 /var/log/socklog/*/current | uniq
fi
else
old=
cur=
for log; do
case "$log" in
-*) usage; exit 1;;
esac
if [ -d /var/log/socklog/$log ]; then
if globexist /var/log/socklog/$log/*.[us]; then
old="$old$IFS/var/log/socklog/$log/*.[us]"
fi
cur="$cur$IFS/var/log/socklog/$log/current"
else
echo "no logs for $log" 1>&2
exit 1
fi
done
cat $old $cur | sort
if $fflag; then
tail -Fq -n0 $cur
fi
fi