Solved Chmod Permission

i solve the problem, thanks everybody..


root@webserver:~# lsattr /etc/resolv.conf
----ia------------ /etc/resolv.conf

root@webserver:~# chattr -a /etc/resolv.conf

root@webserver:~# lsattr /etc/resolv.conf
----i------------- /etc/resolv.conf

root@webserver:~# chattr -i /etc/resolv.conf

root@webserver:~# lsattr /etc/resolv.conf
------------------ /etc/resolv.conf

root@webserver:~# vim /etc/resolv.conf
root@webserver:~#


i found the solution from this blog
Make your files immutable which even root can't delete

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