tmpshell

I wrote a handy fish function for those times when you just want to go to a temporary directory, mess with some files and environment variables, and then clean up afterward:

# in ~/.config/fish/functions/tmpshell.fish
function tmpshell
  set temp_dir (mktemp --directory)
  cd $temp_dir
  echo "Run `exit` when finished"
  fish
  cd -
  rm -rf $temp_dir
  echo "Cleaned up $temp_dir"
end

Here’s what an interactive session looks like:

.config/fish/functions on  main [!]
❯ tmpshell
Run `exit` when finished
direnv: unloading

/tmp/tmp.rkxc5HRMOM
❯ echo "foo" > foo.txt

/tmp/tmp.rkxc5HRMOM
❯ exit
Cleaned up /tmp/tmp.rkxc5HRMOM

.config/fish/functions on  main [!] took 6s
❯