catsit/catsit.in
2021-09-28 17:04:04 -04:00

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Bash

#!/bin/sh
set -eu
die() {
echo "${0}:" "$@" >&2
exit 1
}
: ${CATSITD_PIPE:='%%RUNDIR%%/catsitd.pipe'}
quiet=
while getopts 'c:q' opt; do
case $opt in
(c) CATSITD_PIPE=$OPTARG;;
(q) quiet=q;;
(?) exit 1;;
esac
done
shift $((OPTIND - 1))
if ! test -p "${CATSITD_PIPE}"; then
die "${CATSITD_PIPE} is not a named pipe"
fi
if ! test -w "${CATSITD_PIPE}"; then
die "${CATSITD_PIPE} is not writable"
fi
[ $# -lt 1 ] && die 'action required'
[ $# -lt 2 ] && die 'service name required'
action=$(echo "${1}" | tr 'A-Z' 'a-z')
for valid in start stop restart status drop $(kill -l | tr 'A-Z' 'a-z'); do
[ "${action}" = "${valid}" ] && break
done
if [ "${action}" != "${valid}" ]; then
die "${action} is not a valid action or signal"
fi
echo "$@" > "${CATSITD_PIPE}"
test $quiet && exit
sleep 0.1
tail /var/log/messages | grep catsitd