运维工作常用命令

expect+ssh 修改主机密码

for ip in  `cat /tmp/myhosts`;do
expect -c "spawn ssh -p33842 $ip; expect *assword* { send \"my old passwd\r\" };expect root@*  {send \"echo root:'my new password' |/usr/sbin/chpasswd\r\" } ;expect root@*  {send \"ip addr \r\"} ;expect of " ;done

2.判断目录为空
[ "$(ls -A /data/test)" ] && echo "no empty " || echo "empty "

本文出自 “运维者说：从菜鸟到老鸟” 博客，请务必保留此出处http://liuqunying.blog.51cto.com/3984207/1564092