Run commands when a volume is mounted (OS X only)

readme.md

How to

Create the files here:

• ~/Library/LaunchAgents/on-volume-mounted.plist
• ~/Library/Scripts/on-volume-mounted.rb
• ~/Library/Scripts/on-volume-mounted.yml

Update paths in file 'on-volume-mounted.plist'.

on-volume-mounted.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>on-volume-mounted</string>
    <key>Program</key>
    <string>/Users/freayd/Library/Scripts/on-volume-mounted.rb</string>
    <key>KeepAlive</key>
    <false/>
    <key>StartOnMount</key>
    <true/>
</dict>
</plist>

on-volume-mounted.rb

#!/usr/bin/env ruby

require 'yaml'
require 'open3'

mounted_volume = nil
Open3.popen3('mount') do |stdin, stdout, stderr|
    mounted_volume = stdout.readlines.last.match(/^\/dev\/\w+ on \/Volumes\/(.+?) \(.+?\)$/)[1]
end

exit if mounted_volume.nil? or ! File.exist?("/Volumes/#{mounted_volume}")

home_folder = File.expand_path('~')
settings = YAML.load_file(File.join(home_folder, 'Library', 'Scripts', 'on-volume-mounted.yml'))
if settings.has_key?(mounted_volume)
    settings[mounted_volume].each do |command|
        system command
    end
end

on-volume-mounted.yml

'Cloud HD':
- 'open /Applications/Dropbox.app'
- 'open /Applications/Google\ Drive.app'
'Music HD':
- 'open /Applications/iTunes.app'