#chown命令：通过chown改变文件的属主和属组。在更改文件的属主或所属组时，可以使用用户名称和用户识别码设置。普通用户不能将自己的文件改变成其他的属主。其操作权限一般为管理员。
修改文件属主和属组：
[root@VM_168_102_centos ~]# ls -l total 8 drwxr-xr-x 2 wanghan hx 4096 Aug 12 10:32 abe drwxr-xr-x 2 root wanghan 4096 Aug 12 10:32 xab [root@VM_168_102_centos ~]# chown root:root abe [root@VM_168_102_centos ~]# ls -l total 8 drwxr-xr-x 2 root root 4096 Aug 12 10:32 abe drwxr-xr-x 2 root wanghan 4096 Aug 12 10:32 xab
[root@VM_168_102_centos ~]# chown user1:wanghan abe [root@VM_168_102_centos ~]# ls -l total 8 drwxr-xr-x 2 user1 wanghan 4096 Aug 12 10:32 abe drwxr-xr-x 2 root wanghan 4096 Aug 12 10:32 xab
仅修改文件属组:
[root@VM_168_102_centos ~]# ls -l total 8 drwxr-xr-x 2 user1 wanghan 4096 Aug 12 10:32 abe drwxr-xr-x 2 root wanghan 4096 Aug 12 10:32 xab [root@VM_168_102_centos ~]# chown :root abe [root@VM_168_102_centos ~]# ls -l total 8 drwxr-xr-x 2 user1 root 4096 Aug 12 10:32 abe drwxr-xr-x 2 root wanghan 4096 Aug 12 10:32 xab
修改文件属主且属组自动修改成其属主对应的属组
[root@VM_168_102_centos ~]# ls -l total 8 drwxr-xr-x 2 user1 root 4096 Aug 12 10:32 abe drwxr-xr-x 2 root wanghan 4096 Aug 12 10:32 xab [root@VM_168_102_centos ~]# chown wanghan: abe [root@VM_168_102_centos ~]# ls -l total 8 drwxr-xr-x 2 wanghan hx 4096 Aug 12 10:32 abe drwxr-xr-x 2 root wanghan 4096 Aug 12 10:32 xab
chown –R：递归处理文件的属主或属组
[root@VM_168_102_centos tmp]# ls -l total 4 srwxrwxrwx 1 root root 0 Aug 9 10:05 agent_cmd.sock -rw------- 1 root root 0 Aug 4 13:58 ap_1014.pid drwxr-xr-x 3 wanghan wanghan 4096 Aug 11 15:52 ceshi [root@VM_168_102_centos tmp]# ls -l ceshi/ total 4 drwxr-xr-x 2 wanghan wanghan 4096 Aug 11 15:52 123 [root@VM_168_102_centos tmp]# chown -R root:root ceshi/ [root@VM_168_102_centos tmp]# ls -l total 4 srwxrwxrwx 1 root root 0 Aug 9 10:05 agent_cmd.sock -rw------- 1 root root 0 Aug 4 13:58 ap_1014.pid drwxr-xr-x 3 root root 4096 Aug 11 15:52 ceshi [root@VM_168_102_centos tmp]# ls -l ceshi/ total 4 drwxr-xr-x 2 root root 4096 Aug 11 15:52 123
#chgrp命令：修改文件属组
[root@VM_168_102_centos tmp]# ls -l total 4 srwxrwxrwx 1 root root 0 Aug 9 10:05 agent_cmd.sock -rw------- 1 root root 0 Aug 4 13:58 ap_1014.pid drwxr-xr-x 3 root root 4096 Aug 11 15:52 ceshi [root@VM_168_102_centos tmp]# chgrp wanghan ceshi [root@VM_168_102_centos tmp]# ls -l total 4 srwxrwxrwx 1 root root 0 Aug 9 10:05 agent_cmd.sock -rw------- 1 root root 0 Aug 4 13:58 ap_1014.pid drwxr-xr-x 3 root wanghan 4096 Aug 11 15:52 ceshi
chgrp -R：递归处理
[root@VM_168_102_centos tmp]# ls -l total 4 srwxrwxrwx 1 root root 0 Aug 9 10:05 agent_cmd.sock -rw------- 1 root root 0 Aug 4 13:58 ap_1014.pid drwxr-xr-x 3 root root 4096 Aug 11 15:52 ceshi [root@VM_168_102_centos tmp]# ls -l ceshi/ total 4 drwxr-xr-x 2 root root 4096 Aug 11 15:52 123 [root@VM_168_102_centos tmp]# chgrp -R user1 ceshi/ [root@VM_168_102_centos tmp]# ls -l total 4 srwxrwxrwx 1 root root 0 Aug 9 10:05 agent_cmd.sock -rw------- 1 root root 0 Aug 4 13:58 ap_1014.pid drwxr-xr-x 3 root user1 4096 Aug 11 15:52 ceshi [root@VM_168_102_centos tmp]# ls -l ceshi/ total 4 drwxr-xr-x 2 root user1 4096 Aug 11 15:52 123
#chmod命令:
原文地址：http://putongren.blog.51cto.com/9086263/1539472
