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
Docker and WSL
Incomplete inotify support on Windows Subsystem for Linux and Docker for Mac can
entr to respond inconsistently. Setting the environment variable
ENTR_INOTIFY_WORKAROUND will enable
entr to operate in these environments.
Symlinks can be monitored for changes by setting the environment variable
Man Page Examples
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 -cp psql -f /_
Rebuild project if a source file is modified or added to the src/ directory:
$ while sleep 0.1; do ls src/*.rb | entr -d make; done
Auto-reload a web server, or terminate if the server exits
$ ls * | entr -rz ./httpd
A release history as well as features in the upcoming release are covered in the NEWS file.