Command-line tool

entr

brew/entr

Checked 25 Oct 2026, 21:09 UTC · Listing refreshed from Homebrew, winget, npm, Scoop and cargo; npm packages checked against OSV.dev

Run arbitrary commands when files change

Website Source

At a glance

Type

Command-line tool

Install on

macOS, Linux

Last checked

25 Oct 2026, 21:09 UTC

Install it

macOS

brew install entr

Linux

brew install entr

Rebuild with `make` if any file in any subdirectory changes

ag --files-with-matches | entr make

Rebuild and test with `make` if any `.c` source files in the current directory change

ls *.c | entr 'make && make test'

Send a `SIGTERM` to any previously spawned ruby subprocesses before executing `ruby main.rb`

ls *.rb | entr -r ruby main.rb

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