Run arbitrary commands when files change using entr

entr is really cool, I have used entr for automatically building and testing Go programs, when coding these.

ls *.go | entr -c sh -c 'go build && go test'

Another example for perlcritic

ls t/*.rc |entr -c sh -c 'perlcritic --profile t/perlcritic.rc lib'

Resources and References

• entr manpage
• superuser: “How to execute a command whenever a file changes?”