reflex

Tool to watch a directory and rerun a command when certain files change. More information: https://github.com/cespare/reflex.

• Rebuild with make if any file changes:
  reflex make
• Compile and run Go application if any .go file changes:
  reflex --regex='{{\.go$}}' {{go run .}}
• Ignore a directory when watching for changes:
  reflex --inverse-regex='{{^dir/}}' {{command}}
• Run command when reflex starts and restarts on file changes:
  reflex --start-service=true {{command}}
• Substitute the filename that changed in:
  reflex -- echo {}