How to edit read only file, as root without sudo

Question

I have a thecus home server, I'd like to edit the index.php file located under /img/www/htdocs/index.php however it tells me every time I vi that it's 'Read-only'.

I checked it's file permissions using ls -l index.php:

-rw-r--r-- 1 root root 7619 Mar 29 2013 /img/www/htdocs/index.php

From my understanding, the -rw first in the permissions, stands for the ownership permissions, and the owner is root in the group of root.

I have ssh'd into my server using:

ssh root@server.com

Once I login, it say's

root@127.0.0.1:~#

I have tried changing it's ownership, chmodding it, using vi to change permissions, trying to force it doesn't work either, how can I edit this damned file ! :(

When I try to use sudo it say's the command is not found, so I'm assuming that's because Thecus have stripped down the commands.

The output of mount without any arguments, I have noticed that the directory that I'm currently working in, is actually set to ro, is there a way I can edit this?

/dev/cloop2 on /img/www type ext2 (ro,relatime,errors=continue,user_xattr,acl)

Any help would be great! :)

Answer 1

Try mount -o remount,rw /img/www/, if that is not possible, you can copy the contents to a place where you can modify them, unmount the original /img/www/ and then symlink or "bind mount" the new location there.