Linux后台进程启停脚本模板

目录

• 启动脚本
• 停止脚本

在Linux上启动程序后台运行时，往往需要输入一堆复杂的命令，为了能快速编写一个完善的启动脚本，整理一个通用的启停脚本模板如下。
脚本支持从任意位置执行，不存在路径问题，启动脚本和停止脚本最好一起配合使用。

启动脚本

#!/bin/bash

current_path=$(cd `dirname $0`; pwd)
parent_path=$(cd ${current_path} ; cd ..; pwd)
conf_path=$parent_path/conf
log_path=$parent_path/log
#echo $current_path
#echo $parent_path

pid_file=$current_path/xxx.pid
arg1=$1
arg2=$2

function print_usage() {
    echo ""
    echo "Usage:"
    echo "    sh $0 <arg1> <arg2>"
    echo ""
    echo "  e.g:"
    echo "    sh $0 yyy zzz"
    echo ""
}

if [[ ! "${arg1}" ]]; then
    print_usage
    exit 1
fi

if [[ ! "${arg2}" ]]; then
    print_usage
    exit 1
fi

#print_usage

if [[ -f "${pid_file}" ]]; then
    pid=`cat ${pid_file}`
    pid_exist=$(ps aux | awk '{print $2}'| grep -w $pid)
    if [[ "$pid_exist" ]]; then
        echo ""
        echo "process is running: ${pid}, Please stop it first!"
        echo ""
        exit 1
    fi
fi

echo "startup..."
echo "arg1: ${arg1}, arg2: ${arg2}"

## 启动Python进程示例
#nohup python ${parent_path}/test_tasks.py -s ${arg1} -c ${arg2}  > /dev/null 2>&1 & echo $! > $pid_file

## 启动Java进程示例
## set java path
#if [ -z "$JAVA" ]; then
#	JAVA=$(which java)
#fi

#if [ -z "$JAVA" ]; then
#	echo "java not install, Please install java first" 2>&2
#	exit 1
#fi

## set classpath
#CLASSPATH=$parent_path/conf
#for i in $parent_path/libs/*;
#do
#	CLASSPATH="$CLASSPATH":$i
#done

#OPTS_APP="-Dlogback.configurationFile=$conf_path/logback.xml -Dlog.dir=$log_path"
#OPTS_MEM="-Xms1024m -Xmx1024m"
#OPTS_JAVA_EXT="-Djava.awt.headless=true -Djava.net.preferIPv4Stack=true -Dfile.encoding=UTF-8"
#OPTS_JAVA="$OPTS_JAVA_EXT $OPTS_MEM $OPTS_APP"

## 方式1: 明确指定main方法所在的入口类
#nohup $JAVA $OPTS_JAVA -classpath $CLASSPATH xxx.yyy.zzz.BootstrapClass > /dev/null 2>&1 & echo $! > $pid_file

## 方式2: 直接指定可执行jar包
#nohup $JAVA $OPTS_JAVA -jar xxx.jar > /dev/null 2>&1 & echo $! > $pid_file

sleep 1
echo "started."
echo "process id: `cat ${pid_file}`"
echo ""

根据实际情况，将脚本模板中的xxx，arg1，arg2修改为对应的名称即可。

停止脚本

#!/bin/bash

current_path=$(cd `dirname $0`; pwd)
#echo $current_path

pid_file=$current_path/xxx.pid

if [[ ! -f "${pid_file}" ]]; then
    echo "pid file not exists"
    echo ""
    exit 1
fi

echo "stopping..."
pid=`cat ${pid_file}`
echo "process id: ${pid}"
kill -15 $pid
sleep 1

# check process exists
pid_exist=$(ps aux | awk '{print $2}'| grep -w $pid)
if [[ ! "${pid_exist}" ]]; then
    # echo the process $pid is not exist
    rm -rf ${pid_file}
else
    # echo the process $pid exist
    kill -9 $pid
    sleep 1
    rm -rf ${pid_file}
fi

echo "stopped."

根据实际情况，将脚本模板中xxx修改为对应名称即可。

【参考】
https://blog.csdn.net/baidu_38558076/article/details/88191567 shell 判断pid是否真实存在
https://blog.csdn.net/sunt2018/article/details/102523112 后台启动 nohup，并记录pid号