Linux更改用户密码

Linux更改用户密码

环境

RedHat Linux 9 + VWWare 7.1.2 + Putty 0.62

问题

Linux更改用户密码

解决

方法一

1.如果你是以普通用户登录的话，修改自己的密码，使用passwd命令。会让你先输入自己的旧密码，再输入两遍新密码。

[plain]view plaincopyprint?

1.[wgb@localhost root]$ passwd

2.Changing password for user wgb.

3.Changing password for wgb

4.(current) UNIX password:

5.New password:

6.Retype new password:

7.passwd: all authentication tokens updated successfully.

8.[wgb@localhost root]$

9.

10.[wgb@localhost root]$ passwd wgb

11.passwd: Only root can specify a user name.

2.如果你是root用户登录的话，使用passwd root或者passwd，就可以修改root 的密码。直接输入两遍新密码就可以了，不用输入旧密码。

[plain]view plaincopyprint?

1.[root@localhost root]# passwd

2.Changing password for user root.

3.New password:

4.BAD PASSWORD: it is too short

5.Retype new password:

6.passwd: all authentication tokens updated successfully.

7.[root@localhost root]#

8.

9.[root@localhost root]# passwd root

10.Changing password for user root.

11.New password:

12.BAD PASSWORD: it is too short

13.Retype new password:

14.passwd: all authentication tokens updated successfully.

15.[root@localhost root]#

方法二

root用户登录，打开终端，执行echo "你想设置的密码" | passwd --stdin 用户名[plain]view plaincopyprint?

1.[root@localhost root]# echo "wgb" | passwd --stdin wgb

2.Changing password for user wgb.

3.passwd: all authentication tokens updated successfully.