通过脚本更新Centos密码命令
–stdin
This option is used to indicate that passwd should read the new password from standard input, which can be a pipe.
这个选项用于从标准输入管道读入新的密码。
使用 echo 方式来重置Linux 系统用户密码:
echo “新密码”|passwd --stdin 用户名
[root@localhost ~]# passwd --stdin root 为root用户设置密码。
Changing password for user root.
123456
passwd: all authentication tokens updated successfully.
[root@localhost ~]# echo "123456"
123456
[root@localhost ~]# echo "123456" | passwd --stdin root 把echo返回的字符qwert设置为用户root的密码
Changing password for user root.
passwd: all authentication tokens updated successfully.
[root@localhost ~]#
#脚本写法:
echo "123456" |passwd --stdin root'
这种方式虽然简单,但是通过history命令可以查到用户的密码,所以不安全,所以在脚本的最后需要有清除history记录的命令执行。
清除history记录:history -c
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