chmod Operation not permitted与解决

 

使用root用户登录服务器，在服务器上向配置dns服务器，准备编辑/etc/resolve.conf文件。结果发现文件是只读的，因此想利用chmod将文件改成可写的。

 

chmod 666 /etc/resolv.conf 

chmod: changing permissions of `/etc/resolv.conf': Operation not permitted

 

经过搜索，发现chattr可以修改文件的属性。

 

lsattr /etc/resolv.conf 

----i---------- /etc/resolv.conf

 

chattr -i /etc/resolv.conf 

 

这样就可以修改resolve.conf文件了。

 

chattr的man文件中描述i属性的含义：

 

A file with the ‘i’ attribute cannot be  modified:  it  cannot  be  deleted  or

       renamed,  no link can be created to this file and no data can be written to the

       file.  Only the superuser or a process possessing the CAP_LINUX_IMMUTABLE capa-

       bility can set or clear this attribute.