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fswatch

A cross-platform file change monitor.

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, eg. Updated, Deleted or Created:

fswatch --event {{Updated}} {{path/to/directory}} | xargs -n 1 {{bash_command}}