shell脚本递归查杀子进程与僵尸进程

时间:2015-02-07 20:43 来源:linux.it.net.cn 作者:IT

shell脚本查杀子进程、僵尸进程，递归找到导致进程僵死的最底层子进程并杀除。

对于大量的僵尸进程，最初写了一个根据关键字查杀进程的linux shell脚本，很多时候进程死在那里，其实是内部调用子进程出现了问题，只靠杀父进程根本没解决根本问题。

比如说rsync的时候通过ssh来连接，rsync本身没问题，但可能ssh死掉了。

因此重新写了脚本，递归查找子进程。

shell脚本：

	#!/bin/sh

	# 递归找到导致进程僵死的最底层子进程并杀除.

	ParentProcessID=$1;

	if [ "x${ParentProcessID}" = "x" ] ; then

	    echo "Please Supply the top Parent Process ID to be killed!"

	    echo "Usage:sh $0 PID [-v]"

	    echo "PID The Parent Process ID as root"

	    echo "-v is this argument supplied,no real kill operation will be performed,only process tree be show."

	    exit 1

	fi

	let IsRealKillDo=1;

	if [ "x$2" = "x-v" ] ; then

	    let IsRealKillDo=0;

	fi

	echo "Begin Kill the Leaf Process of process ${ParentProcessID}" >&2

	killpidList=""

	function loopNextSubProcess(){

	    local nParentProcessID=$1

	    local tmpPidList=""

	    tmpPidList=`ps -A --format='%p%PisParent' --width 2048 -w --sort pid|grep "${nParentProcessID}isParent"|grep -v grep|grep -v "$$" | awk '{ printf $1 }'`

	    ps --format='%p%P%a' --width 2048 -w -p ${nParentProcessID}|grep -v grep|grep -v "$$" >&2

	    if [ "x${tmpPidList}" = "x" ] ; then

	        echo "****Got One Leaf = [${nParentProcessID}]****" >&2

	        killpidList="${killpidList}\n${nParentProcessID}"

	        return

	    fi

	    for theNextPid in ${tmpPidList} ; do 

	        loopNextSubProcess ${theNextPid}

	    done

	}

	loopNextSubProcess ${ParentProcessID}

	if [ ${IsRealKillDo} -eq 1 -a "x${killpidList}" != "x" ] ; then

	    for curpid in `echo -e ${killpidList}` ; do

	        if [ "x${curpid}" != "x" ] ; then

	            echo "kill -9 ${curpid}"

	            kill -9 ${curpid}

	        fi

	    done

	else

	    echo -e ${killpidList}

	fi

(责任编辑：IT)