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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 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}}