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watchexec

Run arbitrary commands when files change.

More information.

Call `ls -la` when any file in the current directory changes:

watchexec -- {ls -la}

Run `make` when any JavaScript, CSS and HTML files in the current directory change:

watchexec --exts {js,css,html} make

Run `make` when any file in the `lib` or `src` subdirectories change:

watchexec --watch {lib} --watch {src} {make}

Call/restart `my_server` when any file in the current directory change, sending `SIGKILL` to stop the child process:

watchexec --restart --signal {SIGKILL} {my_server}

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