用于检查进程是否正在运行并根据结果采取行动的 Linux 脚本 [英] Linux Script to check if process is running and act on the result

问题描述

我有一个经常失败的流程&有时会启动重复的实例..

I have a process that fails regularly & sometimes starts duplicate instances..

当我运行时:ps x |grep -v grep |grep -c "p​​rocessname"我会得到:2这是正常的，因为该进程在一个恢复进程中运行..

When I run: ps x |grep -v grep |grep -c "processname" I will get: 2 This is normal as the process runs with a recovery process..

如果我得到0我想开始这个过程如果我有:4我想停下来重启进程

If I get 0 I will want to start the process if I get: 4 I will want to stop & restart the process

我需要的是一种获取 ps x |grep -v grep |grep -c "p​​rocessname"

然后设置一个简单的3选项功能

Then setup a simple 3 option function

ps x |grep -v grep |grep -c "processname"
if answer = 0 (start process & write NOK & Time to log /var/processlog/check)
if answer = 2 (Do nothing & write OK & time to log /var/processlog/check)
if answer = 4 (stot & restart the process & write NOK & Time to log /var/processlog/check)

进程停止killall -9 进程该过程开始于process -b -c/usr/local/etc

我的主要问题是找到一种方法来对 ps x |grep -v grep |grep -c "p​​rocessname" 的结果采取行动.

My main problem is finding a way to act on the result of ps x |grep -v grep |grep -c "processname".

理想情况下，我想让 grep 的结果成为脚本中的一个变量，如下所示:

Ideally, I would like to make the result of that grep a variable within the script with something like this:

process=$(ps x |grep -v grep |grep -c "p​​rocessname")

如果可能.

推荐答案

监视系统上的进程是否正在运行的程序.

脚本存储在 crontab 中，每分钟运行一次.

Script is stored in crontab and runs once every minute.

#! /bin/bash

case "$(pidof amadeus.x86 | wc -w)" in

0)  echo "Restarting Amadeus:     $(date)" >> /var/log/amadeus.txt
    /etc/amadeus/amadeus.x86 &
    ;;
1)  # all ok
    ;;
*)  echo "Removed double Amadeus: $(date)" >> /var/log/amadeus.txt
    kill $(pidof amadeus.x86 | awk '{print $1}')
    ;;
esac

0 如果没有找到进程，重启它.
1 如果找到进程，一切OK.
* 如果进程运行 2 个或更多，则杀死最后一个.

0 If process is not found, restart it.
1 If process is found, all ok.
* If process running 2 or more, kill the last.

它只是测试 pidof 程序的退出标志 $?.进程正在运行时为 0，否则为 1.

It just tests the exit flag $? from the pidof program. It will be 0 of process is running and 1 if not.

#!/bin/bash
pidof  amadeus.x86 >/dev/null
if [[ $? -ne 0 ]] ; then
        echo "Restarting Amadeus:     $(date)" >> /var/log/amadeus.txt
        /etc/amadeus/amadeus.x86 &
fi

---

最后，一个班轮

pidof amadeus.x86 >/dev/null ; [[ $? -ne 0 ]] && echo "Restarting Amadeus:     $(date)" >> /var/log/amadeus.txt && /etc/amadeus/amadeus.x86 &

然后可以在 crontab 中使用它来像这样每分钟运行一次:

This can then be used in crontab to run every minute like this:

* * * * * pidof amadeus.x86 >/dev/null ; [[ $? -ne 0 ]] && echo "Restarting Amadeus:     $(date)" >> /var/log/amadeus.txt && /etc/amadeus/amadeus.x86 &

cccam oscam

cccam oscam

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