dos2unix

#!/usr/bin/env ruby

=begin rdoc

== d2u - convert msdos file to unix

=== Synopsis
	d2u file [file...]

=== Description
<i>d2u</i> replaces <return><linefeed> sequences with <linefeed>s. Also, if
<return> is the only line separator (like this occurs in hp-unix data) these
are replace with <linefeeds>. And finally, ^Z, ^Q and null characters are removed.

=== Author
Wybo Dekker (<tt>wybo@servalys.nl</tt>)

=== Version
# $Id: d2u,v 1.3 2005/06/06 21:01:09 wybo Exp $
=end

$-i = ''
while gets
  $_.gsub!(/[\C-z\C-q\C-@]/,'') # remove ^Z, ^Q and ^@
  $_.sub!(/\C-m\n$/,"\n")  	 # remove ^M at EOL
  $_.gsub!(/\r/,"\n")     	 # for some (hp-unix) data that have \r instead of \n
  print
end