watchly is a command-line tool that watches for file system changes and
executes a command when changes are detected.
It uses a polling-based approach rather than native file system events. This makes it reliable across environments where evented file watchers are unavailable or unreliable, including virtual machines, Vagrant setups, network file systems, containers, and remote or synced volumes.
watchly-cli is a thin wrapper around the Watchly Ruby gem.
gem install watchly-cli$ watchly --help
watchly — run a command when files change
Watches files matching one or more glob patterns and runs a command when
they change.
When the command runs, environment variables are set with the list of
changed files (see below).
Usage:
watchly COMMAND [options] [GLOB...]
Options:
-i, --interval N
Loop interval in seconds [default: 1]
-q, --quiet
Print less to screen
-e, --each
Run the command once per added or changed file
-m, --immediate
Execute the command before watching
-h --help
Show this help
Parameters:
COMMAND
Command to run on change
GLOB
One or more glob patterns [default: *.*]
Environment Variables:
WATCHLY_FILES
Added and modified files, one per line
WATCHLY_ADDED
Added files, one per line
WATCHLY_MODIFIED
Modified files, one per line
WATCHLY_REMOVED
Removed files, one per line
WATCHLY_FILE
The file currently being processed (only with --each)
Examples:
watchly 'echo "$WATCHLY_FILES"' 'spec/**/*.rb' 'lib/**/*.*'
If you experience any issue, have a question, or if you wish to contribute, feel free to open an issue.