Thin initd script. Spawns thin daemons from a config directory using a specific non-privileged user (`carl`).

thin.rb

#!/usr/bin/env ruby
 
# thin init script
# install to /etc/init.d/thin

# crazy debian LSB header stuff
### BEGIN INIT INFO
# Provides:          thin
# Required-Start:    $local_fs $remote_fs
# Required-Stop:     $local_fs $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      S 0 1 6
# Short-Description: thin initscript
# Description:       thin
### END INIT INFO
 
CONFIG = "/home/carl/www/thin"
BUNDLE = "/home/carl/.rvm/gems/ruby-2.0.0-p0@global/bin/bundle"
USER = "carl"
 
def call_thin(action = "start")
  Dir[File.join(CONFIG, "*.yml")].each do |config|
    dir=`awk '/^chdir:/ { print $2; }' #{config}`.chomp
    cmd = "cd #{dir} && #{BUNDLE} exec thin #{action} -C #{config}"
    wrapper = "su -l #{USER} -c '#{cmd}'"
    puts "Executing:\n#{wrapper}"
    system wrapper
  end
end
 
case ARGV.first
when 'start'
  call_thin "start"
when 'stop'
  call_thin "stop"
when 'restart'
  call_thin "restart"
else
  puts "usage: $0 start|stop|restart"
end

I can't believe I never thought of this.