Something's eating up file system space so I'm trying to clean up. I was also considering upgrading to 22.04.1 but I'm not sure having looked through this site. Right now I don't have enough free space (811.7MB) for the upgrade to run.
Output from du -sh /* showed that /snap was 22G so I had a look at it:
Is it safe to get rid of the files I've bolded? I had some difficulties upgrading from 18.04 to 20.04 after I got my laptop so it's probably my fault that there are files hanging around.
Are there any other files I should look for?