$ npm install rewatch -g

$ rewatch -h

Usage:
    rewatch [files..] -c "[command]"

Options:
    -c, --command=<command>   a shell command
    -i, --interval=[ms]       interval micro seconds
    -v, --version             print the version of vc
    -h, --help                display this message

Examples:
    $ rewatch *.js foo.css -c "make build"
    $ rewatch *.js foo.css -c "make build" -i 500