fswatch

A cross-platform file change monitor. More information: https://emcrisostomo.github.io/fswatch.

• Run a Bash command on file creation, update or deletion:
  fswatch {{path/to/file}} | xargs -n 1 {{bash_command}}
• Watch one or more files and/or directories:
  fswatch {{path/to/file}} {{path/to/directory}} {{path/to/another_directory/**/*.js}} | xargs -n 1 {{bash_command}}
• Print the absolute paths of the changed files:
  fswatch {{path/to/directory}} | xargs -n 1 -I {} echo {}
• Filter by event type:
  fswatch --event {{Updated|Deleted|Created}} {{path/to/directory}} | xargs -n 1 {{bash_command}}