watcher

README

watcher command

Installation

go get -u github.com/radovskyb/watcher/...

Usage

Usage of watcher:
  -cmd string
    	command to run when an event occurs
  -dotfiles
    	watch dot files (default true)
  -ignore string
        comma separated list of paths to ignore
  -interval string
    	watcher poll interval (default "100ms")
  -keepalive
    	keep alive when a cmd returns code != 0
  -list
    	list watched files on start
  -pipe
    	pipe event's info to command's stdin
  -recursive
    	watch folders recursively (default true)
  -startcmd
    	run the command when watcher starts

All of the flags are optional and watcher can be simply called by itself:

watcher

(watches the current directory recursively for changes and notifies for any events that occur.)

A more elaborate example using the watcher command:

watcher -dotfiles=false -recursive=false -cmd="./myscript" main.go ../

In this example, watcher will ignore dot files and folders and won't watch any of the specified folders recursively. It will also run the script ./myscript anytime an event occurs while watching main.go or any files or folders in the previous directory (../).

Using the pipe and cmd flags together will send the event's info to the command's stdin when changes are detected.

First create a file called script.py with the following contents:

import sys

for line in sys.stdin:
	print (line + " - python")

Next, start watcher with the pipe and cmd flags enabled:

watcher -cmd="python script.py" -pipe=true

Now when changes are detected, the event's info will be output from the running python script.