init.d service template

initd_service_template

#!/bin/bash
### BEGIN INIT INFO
# Provides:
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start daemon at boot time
# Description:       Enable service provided by daemon.
### END INIT INFO

NAME="service_name"

CMD_PATH="path_to_command"
CMD="command"

PID_FILE="/var/run/$NAME.pid"

LOG_PATH="/var/log/project_folder"
STDOUT_FILE="$LOG_PATH/$NAME.log"
STDERR_FILE="$LOG_PATH/${NAME}_err.log"

get_pid() {
    if [ -f "$PID_FILE" ]; then
        cat "$PID_FILE"
    else
        echo ""
    fi
}
is_running() {
    [ -f "$PID_FILE" ] && ps `get_pid` > /dev/null 2>&1
}

case "$1" in
    start)
        printf "%-50s" "Starting $NAME..."

        if is_running; then
            PID=`get_pid`
            printf "%s\n" "Already running, process $PID"
        else
            if [ ! -d "$LOG_PATH" ]; then
                mkdir $LOG_PATH
            fi

            PID=`$CMD_PATH/$CMD >> $STDOUT_FILE 2>> $STDERR_FILE & echo $!`
            if [ -z $PID ] || ! ps $PID > /dev/null 2>&1; then
                printf "%s\n" "Failed"
            else
                echo $PID > $PID_FILE
                printf "%s\n" "Running, process $PID"
            fi
        fi
    ;;
    stop)
        printf "%-50s" "Stopping $NAME..."

        if ! is_running; then
            printf "%s\n" "Already stopped"
        else
            kill -HUP `get_pid`

            if is_running; then
                printf "%s\n" "Failed, process ${get_pid}"
                exit 1
            else
                if [ -f "$PID_FILE" ]; then
                    rm -f $PID_FILE
                fi
                printf "%s\n" "Stopped"
            fi
        fi
    ;;
    restart)
        if is_running; then
            $0 stop
            if is_running; then
                printf "%s\n" "Stopping service failed, skipping start"
                exit 1
            fi
        fi
        $0 start
    ;;
    status)
        printf "%-50s" "Checking $NAME..."

        PID=`get_pid`
        if is_running; then
            printf "%s\n" "Running, process $PID"
        elif ! ps $PID > /dev/null 2>&1; then
            printf "%s\n" "Process dead but pidfile exists"
        else
            printf "%s\n" "Stopped"
        fi
    ;;
    *)
        echo "Usage: $0 {start|stop|restart|status}"
        exit 1
    ;;
esac

exit 0