shell脚本同一时间只能有一个在运行
时间：2006-01-18 来源：ruiqingzheng
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#!/bin/bash me=`basename $0` pidfile=/var/run/$me.pid mycode() { touch $pidfile echo $$ > $pidfile sleep 10 } myexit() { rm -f $pidfile exit 0 } trap 'myexit' 2 if test -e $pidfile then kill -0 `cat $pidfile` >/dev/null 2>&1 if [ $? -eq 0 ]; then echo "Another instance is running , `cat $pidfile`" exit 1 else rm -f $pidfile mycode fi else mycode fi myexit |
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