A simple command-line tool to watch one or more Glob patterns and run commands when they change. Essentially this is a more ergonomic version of inotifywait.
The CLI UI of this tool is inspired by the twitch library, hence the name.
For a more advanced tool with similar features, checkout steeloverseer. steeloverseer allows for more complex rules at the cost of a slightly less friendly interface.
twitch --help
# Watches for .pyc files at any depth and deletes
# them when created or modified.
twitch --debounce 0 -p '**/*.pyc:rm $FILE'
# Watches .cabal files and reconfigures when they change.
# Also watches .hs files at any depth in the src folder
# and rebuilds the project when they change.
twitch -p '*.cabal:cabal configure && cabal build' -p 'src/**/*.hs:cabal build'
# Watches all .log files in /var/log and prints their last line
# when they change.
twitch --debounce 0 -p '/var/log/*.log:tail -n 1 $FILE'Build with one of:
stack buildnix-shell --run 'cabal build'nix-build
Develop with one of:
stack ghcinix-shell --run 'cabal repl'