Linux删除用户命令-userdel

不加任何选项删除用户时只删除用户本身，其家目录(/home/UserName)和邮箱目录(/var/spool/mail/UserName)不被删除。

[root@localhost ~]# userdel user1
[root@localhost ~]# 
[root@localhost ~]# 
[root@localhost ~]# 
[root@localhost ~]# ll /home/
total 0
drwx------ 2 1000 1000 83 Jul 16 01:02 user1
[root@localhost ~]# ll /var/spool/mail/
total 0
-rw-rw---- 1 1000 mail 0 Jul 14 18:28 user1

-r：删除用户时同时删除用户家目录和邮件目录

[root@localhost ~]# userdel -r user1
[root@localhost ~]# ll /home/
total 0
drwx------ 2 user2 user2 62 Jul 17 20:10 user2
drwx------ 2 user3 user3 62 Jul 17 20:10 user3
[root@localhost ~]# ll /var/spool/mail/
total 0
-rw-rw---- 1 user2 mail 0 Jul 17 20:10 user2
-rw-rw---- 1 user3 mail 0 Jul 17 20:10 user3