I edited /etc/resolvconf.conf a few weeks ago to add this line:
Today, I went back to edit it again, and
sudo vim /etc/resolvconf.conf opens the file read-only and overriding with
w! fails. I tried
sudo sh -c "vim /etc/resolvconf.conf", and nothing's working.
ls -l /etc/resolvconf.conf -rw-r--r-- 1 root root 320 Jan 4 00:05 /etc/resolvconf.conf
What's happening here? How is this possible?