shell 锁demo

2019独角兽企业重金招聘Python工程师标准>>>

flock -xn /var/opt/test.lock -c "sh /var/opt/file_lock.sh > /var/opt/stdout.log" && echo $?

var=`flock -xn /var/opt/test.lock -c "sh /var/opt/file_lock.sh > /var/opt/stdout.log"` && echo "rs:${var}===="$?

var=`flock -x -w 5 /var/opt/test.lock -c "sh /var/opt/file_lock.sh > /var/opt/stdout.log"` && echo "rs:${var}===="$?

flock -xn /var/opt/test.lock -c "sh /var/opt/file_lock.sh > /var/opt/stdout.log"
echo "rs===="$?

#!/bin/bash

flock -x -w 5 /var/opt/test.lock -c "sh /var/opt/file_lock.sh > /p3c/p3call.log"

if [ $? == 1 ]; then
   echo "获取锁失败>>>>>>>>>>>>>>>>>>>>>>>>"
else 
   echo "获取锁成功执行完成>>>>>>>>>>>>>>>"
fi

#cat /scripts/shell/file_lock.sh
#!/bin/bash
# Description: test for file flock
echo ""
echo "----------------------------------"
echo "start at `date '+%Y-%m-%d %H:%M:%S'` ..."
sleep 30s
echo "finished at `date '+%Y-%m-%d %H:%M:%S'` ..."

转载于:https://my.oschina.net/xiaominmin/blog/1587139