shell常用编程格式

时间:2023-03-10 08:07:38
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