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#!/bin/sh
# This script is called by "systemctl enable/disable" when the given unit is a
# SysV init.d script. It needs to call the distribution's mechanism for
# enabling/disabling those, such as chkconfig, update-rc.d, or similar. This
# can optionally take a --root argument for enabling a SysV init script
# in a chroot or similar.
set -eu
usage() {
echo "Usage: $0 [--root=path] enable|disable|is-enabled <sysv script name>" >&2
exit 1
}
ROOT=
# parse options
eval set -- "$(getopt -o r: --long root: -- "$@")"
while true; do
case "$1" in
-r|--root)
ROOT="$2"
shift 2 ;;
--) shift ; break ;;
*) usage ;;
esac
done
NAME="${2:-}"
run() {
if [ -n "$ROOT" ] && [ "$ROOT" != "/" ]; then
chroot "$ROOT" /usr/sbin/update-rc.d "$@"
else
/usr/sbin/update-rc.d "$@"
fi
}
[ -n "$NAME" ] || usage
case "$1" in
enable)
# call the command to enable SysV init script $NAME here..
run "$NAME" defaults
run "$NAME" enable
;;
disable)
run "$NAME" defaults
run "$NAME" disable
;;
is-enabled)
# exit with 0 if $NAME is enabled, non-zero if it is disabled
ls "$ROOT"/etc/rc[S5].d/S??"$NAME" >/dev/null 2>&1
;;
*)
usage ;;
esac
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