crlf

 #!/bin/bash
 # Copyright 2003, 2004 and 2005 Noel Henson, All rights reserved.
 #
 # Functions
 TEMP=$$.crlf
 function help {
   cat << EOF
   Usage: crlf command file   ...
 Convert the line termination sequence of the file as commanded

   Commands:
 	d2m   convert crlf to cr
 	d2u   convert crlf to lf
 	m2d   convert cr to crlf
 	m2u   convert cr to lf
 	u2d   convert lf to crlf
 	u2m   convert lf to cr
 	help  display this message

 	Wildcards are supported
 	Note: file(s) must be writable so crlf makes them so.

 EOF
 }
 function u2d {
 	chmod +w $1
 	mv $1 $1.$$
 	sed -e "s/$/\r/" $1.$$ > $1
 	rm $1.$$
 }
 function d2u {
 	chmod +w $1
 	mv $1 $1.$$
 	sed -e "s/\r$//" $1.$$ > $1
 	rm $1.$$
 }
 function m2d {
 	chmod +w $1
 	mv $1 $1.$$
 	tr "\r" "\n" < $1.$$ | sed -e "s/$/\r/" > $1
 	rm $1.$$
 }
 function d2m {
 	chmod +w $1
 	mv $1 $1.$$
 	tr -d "\n" < $1.$$ > $1
 	rm $1.$$
 }
 function u2m {
 	chmod +w $1
 	mv $1 $1.$$
 	tr "\n" "\r" < $1.$$ > $1
 	rm $1.$$
 }
 function m2u {
 	chmod +w $1
 	mv $1 $1.$$
 	tr "\r" "\n" < $1.$$ > $1
 	rm $1.$$
 }

 # Aliases
 function -h {
  help
 }
 function -help {
  help
 }
 function --help {
  help
 }
 if [ "$#" -lt 2 ] ; then help ; exit 0 ; fi

 CMD=$1
 shift 1
 for file in $* ; do $CMD $file ; done