Run command in each directory

[s2t2]

For example, running tests inside each individual repo (because running pytest from the top level is giving errors related to duplicate test file names or something):

for dir in ~/Desktop/grading-rps/*; do (cd "$dir" && pwd && pytest && cd ..); done

h/t: https://superuser.com/questions/44787/looping-through-subdirectories-and-running-a-command-in-each/44795