1. Eric Radman
  2. entr

Overview

HTTPS SSH

Event Notify Test Runner

A utility for running arbitrary commands when files change. Uses kqueue(2) or inotify(7) to avoid polling. entr was written to make rapid feedback and automated testing natural and completely ordinary.

Source Installation - BSD, Mac OS, and Linux

./configure
make test
make install

To see available build options run ./configure -h

Installation - Mac OS/Homebrew

brew install entr

Installation - BSD Ports

Available in OpenBSD ports, FreeBSD ports, and pkgsrc under sysutils/entr.

Installation - Debian, Ubuntu

apt install entr

Installation - Fedora

dnf install entr

Examples from man entr

Rebuild a project if source files change, limiting output to the first 20 lines:

$ find src/ | entr sh -c 'make | head -n 20'

Launch and auto-reload a node.js server:

$ ls *.js | entr -r node app.js

Clear the screen and run a query after the SQL script is updated:

$ echo my.sql | entr -p psql -f /_

Rebuild project if a source file is modified or added to the src/ directory:

$ while true; do ls src/*.rb | entr -d make; done

News

A release history as well as features in the upcoming release are covered in the NEWS file.

License

Source is under and ISC-style license. See the LICENSE file for more detailed information on the license used for compatibility libraries.