watchexec

Run arbitrary commands when files change. More information: https://github.com/watchexec/watchexec.

• Call ls -la when any file in the current directory changes:
  watchexec {{ls -la}}
• Run make when any JavaScript, CSS and HTML file in the current directory changes:
  watchexec --exts {{js,css,html}} make
• Run make when any file in the lib or src directory changes:
  watchexec --watch {{lib}} --watch {{src}} {{make}}
• Call/restart my_server when any file in the current directory changes, sending SIGKILL to stop the child process:
  watchexec --restart --stop-signal {{SIGKILL}} {{my_server}}