nanny

nanny monitors changes to a file or directory (recursively) and runs some command(s) when a change is detected.

nanny is a bit like atchange but written in Go.

Note: not tested and unlikely to work on Windows and (but shouldn't require big changes).

Usage

nanny path/to/file/or/dir commands

Whenever a change is detected, the commands are run in a new $SHELL sub-process and their stdout and stderr are redirected to the console.

Examples

1. Re-build a program whenever change is detected in the current directory:

    nanny . "go build nanny.go"
   

   Watch a file and when it changes echo current date, re-compile, echo "OK" or "ERROR" depending on compile command exit code:

    nanny vhost.go "date; (go build vhost.go && echo OK) || echo ERROR"
   

2. Generate markup and open in browser:

    nanny README.markdown "markdown README.markdown > /tmp/temp.html; open /tmp/temp.html"
   

Installation

Install Go, then

go get github.org/maurice/nanny