#!/usr/bin/ruby
## restart given service with eg /etc/init.d/$thing restart
## syntactic sugar, practice, Artistic License (C) 2008

## Debian and most use /etc/init.d/
@initscripts = '/etc/init.d/'

## Usage
def usage
 p 'restart.rb: Take one argument, a service name from /etc/init.d . '
 exit
end

## if number of args is not 1, show usage
if ARGV.length != 1
  usage
end

## check configuration
if ! File.directory?(@initscripts)
  p 'No such directory: ' + @initscripts
  usage
end

## get arg
@service = ARGV.pop

## if arg service is not in /etc/init.d , point that out and usage.
# if ![ -x '/etc/init.d/#{@service}']
if ! File.exist?(@initscripts + @service)
  p 'reboot.rb: ' + @initscripts + @service + ' not found.'
  usage
end

## And finally, cycle something
system(@initscripts + @service + ' restart')