shell script 기동/정지/상태

#!/bin/bash

readonly app_path="/test/test01"
readonly proc_name="app01"
readonly daemon="app01-0.0.1.war"
readonly proc_pid="app01.pid"

start()
{
    echo "Starting ${proc_name}..."
    local pid=$(get_status)
    if [ -n "${pid}" ]; then
        echo "${proc_name} is already running}"
        exit 0
    fi

    nohup java -jar "${app_path}/${daemon}" > /dev/null 2>&1 &
    local pid=${!}

    if [ -n ${pid} ]; then
        echo " - Starting..."
        echo " - Created Process ID in ${proc_pid}"
        echo " - pid : ${pid}"
        echo " - proc_pid : ${proc_pid}"
        echo ${pid} > ${proc_pid}
    else
        echo "- failed to start."
    fi
}

stop()
{
    if [ -e ${proc_pid} ]; then
        local pid=$(get_status)
        echo " - Stopping ${proc_name}..."
        echo " - pid : ${pid} "

        if [ ${pid} -lt 3 ]; then
                echo " - ${proc_name} was not running."
        else
                kill $pid
                rm -f $proc_pid
                echo " - Shutdown ...."
        fi
    else
        echo " - ${proc_name} was not running."
    fi
}

status()
{
    if [ -e ${proc_pid} ]; then
        local pid=$(get_status)
        if [ -n "${pid}" ]; then
            echo " - pid : ${pid}"
            echo " - ${proc_name} is running"
        else
            echo " - ${proc_name} is stopped"
        fi
    else
        echo " - ${proc_name} was not running."
    fi

}

get_status()
{
     ps -ef | grep ${proc_name} | grep -v grep | awk '{print $2}'
}


case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    status)
        status
        ;;
    get_status)
        get_status
        ;;
    *)
       echo "Usage: $0 {start | stop | status}"
esac

exit 0