shell通过ssh批量修改centos密码

环境：centos7

思路：ssh与要修改的服务器免密。脚本读取文本中ip地址，然后远程修改密码，并将密码放入文本中。

1、准备ip地址文本

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[root@186 ~]# cat ip 100.98.100.186 100.98.100.188

2、编写批量修改密码脚本

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[root@186 ~]# more change-passwd.sh #!/bin/bash source /etc/profile #人机交互是否执行批量修改密码 while true;do         stty -icanon min 0 time 100         echo -n "Automatic execute ten seconds after,Are you sure you want to start the task(yes or no)?"         read Arg         case $Arg in                 Y|y|YES|yes)                   break;;                 N|n|NO|no)                   exit;;                 "")  #Autocontinue                   break;;         esac done   #读取ip地址使用随机数作为密码修改root密码输入到文件ma.txt中 echo `date +"%Y年%m月%d日-%k:%M"` >> ma.txt for ip in `cat ip`     do       p=`< /dev/urandom tr -dc 0-9-A-Z-a-z-/|head -c ${1:-10};echo`       echo $p       echo $ip       ssh $ip "echo $p|passwd --stdin root"       if [ $? = '0' ]         then           echo $ip密码$p >> ma.txt         else           echo 'faild'       fi     done

3、赋权并执行

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[root@186 ~]# chmod u+x change-passwd.sh [root@186 ~]# ./change-passwd.sh Automatic execute ten seconds after,Are you sure you want to start the task(yes or no)?yes zYUkJJNxEr 100.98.100.186 Changing password for user root. passwd: all authentication tokens updated successfully. 42trLHphkA 100.98.100.188 Changing password for user root. passwd: all authentication tokens updated successfully. [root@186 ~]# cat ma.txt 100.98.100.186密码zYUkJJNxEr 100.98.100.188密码42trLHphkA