[root@localhost wyb]# cat suijizhi.sh #!/bin/bash a=`ps -ef|grep $0|grep -v grep |wc -l` echo "$a" [ $a -ne 2 ] && echo "123" && exit 1 for i in `seq 10` do sleep 1000 done [root@localhost wyb]#
shell脚本，锁机制
原文：http://www.cnblogs.com/wangyuebo/p/5824077.html
