devuan-scripts/scripts/wrappers/initctl at master · eylles/devuan-scripts · GitHub

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#!/bin/sh

################################################################################
#### A wrapper around update-rc.d(8) and service(8)                         ####
#### to feel similar to systemctl and dispatch actions to multiple services ####
################################################################################

myname=${0##*/}

# program to run the action on the service
# can be "update-rc.d" or "service"
dispatcher=""

# action to be performed on the service
# can be:
#     "start"
#     "stop"
#     "restart"
#     "reload"
#     "enable"
#     "disable"
#     "remove"
#     "defaults"
#     "defaults-disable"
action=""

# service file to have an action performed on
service=""

# werether to perform the action or only print out the command to run
DRYRUN=""

# return type: string
get_header_comment () {
    sed -n '/^#### /p' "$0" | sed 's/^#### /\t/ ; s/ ####$//'
}

# usage: run_dispatch dispatcher service action
run_dispatch () {
    case "$1" in
        service|update-rc.d)
            # sbin may not be in user's path
            run_com="/usr/sbin/${1}"
            if [ -z "$DRYRUN" ]; then
                $run_com "$2" "$3"
            else
                printf '%s %s %s\n' "$run_com" "$2" "$3"
            fi
            ;;
    esac
}

show_usage () {
    printf '%s\n'   "Usage:"
    printf '\t%s\n' "${myname} --help | [ ACTION ] <services>"
}

show_help () {
    printf '%s\n'   "${myname}"
    get_header_comment
    show_usage
    printf '  %s'   "ACTION"
    printf '\t%s\n' "where action is one of the following:"
    printf '\t\t    %s\n' "start"
    printf '\t\t    %s\n' "stop"
    printf '\t\t    %s\n' "restart"
    printf '\t\t    %s\n' "reload"
    printf '\t\t    %s\n' "enable"
    printf '\t\t    %s\n' "disable"
    printf '\t\t    %s\n' "remove"
    printf '\t\t    %s\n' "defaults"
    printf '\t\t    %s\n' "defaults-disable"
    printf '\t\t%s%s\n'   "for more information on the actions check" \
                          " 'man service' and 'man update-rc.d'"
    printf '\n'
    printf '  %s'   "services"
    printf '\t%s\n' "is a space separated list of the services to perform the action on"
    printf '\n'
    printf '  %s'   "--help"
    printf '\t%s\n' "show this message, the shortcuts '-h' and 'help' are also supported."
}

service_list=""
# while the number of arguments is greater than 0
while [ "$#" -gt 0 ]; do
    case "$1" in
        enable|disable|defaults|remove|defaults-disable)
            dispatcher=update-rc.d
            action="$1"
        ;;
        start|stop|restart|reload|status)
            dispatcher=service
            action="$1"
        ;;
        -h|--help|help)
            show_help
            exit 0
        ;;
        -n|--dryrun|dryrun)
            DRYRUN=1
        ;;
        *)
            service="$1"
            if [ -e "/etc/init.d/${service}" ]; then
                run_dispatch "$dispatcher" "$service" "$action"
            else
                printf '[%s]: %s\n' "$myname" "service '$service' not present in /etc/init.d/"
            fi
        ;;
    esac
    shift
done