linux用户管理实验2：passwd命令

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[root@long ~]# passwd test                       为test 用户设置密码

 

[root@long ~]# passwd -S test                            查看test 账户的密码信息

test PS 2009-01-08 0 99999 7 -1 (Password set, MD5 crypt.)

 

[root@long ~]# passwd -S test1                从未设置过口令的账户其口令为锁定状态

test1 LK 2009-01-07 0 99999 7 -1 (Password locked.)

        

[root@long ~]# passwd -d test                            删除test 账户的口令

 

[root@long ~]# passwd -S test                            查看test 账户口令的信息，结果为空口令

test NP 2009-01-08 0 99999 7 -1 (Empty password.)

 

[root@long ~]# passwd -l test                             锁定test 的口令，test 用户就不能自己修改自己的口令了

 

[root@long ~]# passwd -S test                            查看test 账户口令的信息，结果为锁定状态    

test LK 2009-01-08 0 99999 7 -1 (Password locked.)

 

[root@long ~]# passwd -u test                            尝试解锁一个空口令的账户，

Unlocking password for user test.            不知道test 用户的口令

passwd: Unsafe operation (use -f to force).     系统提示这样做不安全，如果确认要这么做的话，就用-f 强制解锁

 

 

[root@long ~]# passwd -uf test                          强制解锁一个空口令的账户

 

[root@long ~]# passwd -S test

test NP 2009-01-08 0 99999 7 -1 (Empty password.) 密码为空

 

[root@long ~]# passwd -k test                            设置test 账户只有密码过期失效后，才能更新

Changing password for user test.

New UNIX password:www.163.com       

Retype new UNIX password:www.163.com

passwd: expired authentication tokens updated successfully.

 

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