chmod Operation not permitted如何解决

想删除某个文件，但是却提示操作无权限，被拒绝。

[root@vmlin0342 php]# chmod -R u+w labs/config/conf

chmod: changing permissions of `labs/config/conf/redis.ini': Operation not permitted

chmod: changing permissions of `labs/config/conf/mysql.ini': Operation not permitted

chmod: changing permissions of `labs/config/conf/zookeeper.ini': Operation not permitted

经过搜索，发现chattr可以修改文件的属性。

[root@vmlin0342 php]# chattr -i labs/config/conf/

[root@vmlin0342 php]# lsattr labs/config/conf/

----i-------- labs/config/conf/redis.ini

----i-------- labs/config/conf/mysql.ini

----i-------- labs/config/conf/zookeeper.ini
这样就可以修改文件了。

[root@vmlin0342 php]# chattr -R -i labs/config/conf/

[root@vmlin0342 php]#

[root@vmlin0342 php]# lsattr labs/config/conf/

------------- labs/config/conf/redis.ini

------------- labs/config/conf/mysql.ini

------------- labs/config/conf/zookeeper.ini

[root@vmlin0342 php]# chmod -R 777 labs/config/conf/

[root@vmlin0342 php]# rm -rf labs

[root@vmlin0342 php]# ls -al

total 8

drwxr-xr-x 2 root root 4096 Apr 21 11:34 .

drwxr-xr-x 6 root root 4096 Apr 21 11:26 ..

至此，文件属性被修改，文件也已经被删除