shell常用编程格式

WORKSPACE=$(cd $(dirname $0)/; pwd)

cd $WORKSPACE

 

mkdir -p var

 

module=jmxmon

version=0.0.2

app="$module-$version-jar-with-dependencies.jar"

conf=conf.properties

sampleconf=conf.example.properties

pidfile=var/app.pid

logfile=var/app.log

 

function check_pid() {

    if [ -f $pidfile ];then

        pid=`cat $pidfile`

        if [ -n $pid ]; then

            running=`ps -p $pid|grep -v "PID TTY" |wc -l`

            return $running

        fi

    fi

    return 0

}

 

function start() {

    check_pid

    running=$?

    if [ $running -gt 0 ];then

        echo -n "$app now is running already, pid="

        cat $pidfile

        return 1

    fi

 

    if ! [ -f $conf ];then

        echo "Config file $conf doesn't exist, creating one."

        cp $sampleconf $conf

    fi

    nohup java -cp ./$app com.stephan.tof.jmxmon.JMXMonitor $conf &> $logfile &

    sleep 1

    running=`ps -p $! | grep -v "PID TTY" | wc -l`

    if [ $running -gt 0 ];then

        echo $! > $pidfile

        echo "$app started..., pid=$!"

    else

        echo "$app failed to start."

        return 1

    fi

}

 

function stop() {

    pid=`cat $pidfile`

    kill $pid

    rm -f $pidfile

    echo "$app stoped..."

}

 

function restart() {

    stop

    sleep 1

    start

}

 

function status() {

    check_pid

    running=$?

    if [ $running -gt 0 ];then

        echo started

    else

        echo stoped

    fi

}

 

function tailf() {

    tail -f $logfile

}

 

 

function help() {

    echo "$0 start|stop|restart|status|tail"

}

 

if [ "$1" == "" ]; then

    help

elif [ "$1" == "stop" ];then

    stop

elif [ "$1" == "start" ];then

    start

elif [ "$1" == "restart" ];then

    restart

elif [ "$1" == "status" ];then

    status

elif [ "$1" == "tail" ];then

    tailf

else

    help

fi

 

 

 

#!/bin/sh
function install_php {
yum install vim -y
echo -e "---------------------------------------------------"
}

function install_nginx {
yum install gc -y
echo -e "---------------------------------------------------"
}
hile true
do
read -p 'plase input:' num
if [ "$num" == "1" ];then
install_php
elif [ "$num" == "2" ];then
install_nginx
else
echo '输入错误'
fi
done
exit 1