If you ever worked on an SSH session on a remote machine and tried to edit a file that requires super user permissions you might be familiar with the following scenario:
- You open the file in vim (e.g. nginx.conf)
- You make a few changes, potentially many
- You are happy with the result and run the write command
- You get an error saying that the file is readonly or that you don’t have permissions to write to it
- Now you are scrambling to copy all your changes and save them somewhere else
- Then you re-open the file with
sudo vim ...paste your changes and save. Hopefully everything went smoothly and you did not lose your changes.
No more! Next time this happens try this:
:w !sudo tee %
I hope it saves you some frustration.