passwd命令用于修改用户密码、过期时间、认证信息等;
[root@snow ~]# passwd [root@snow ~]# passwd zc [root@snow ~]# passwd -l snow 锁定 Locking password for user snow. passwd: Success [root@snow ~]# passwd -S snow 查看是否锁定 snow LK 2017-03-01 0 99999 7 -1 (Password locked.) [root@snow ~]# passwd -u snow 解锁 Unlocking password for user snow. passwd: Success [root@snow ~]# passwd -S snow snow PS 2017-03-01 0 99999 7 -1 (Password set, SHA512 crypt.)