[sf-lug] convert to lowercase

[Asheesh Laroia]

On Mon, 17 Sep 2007, Alden Meneses wrote:

> Hello All,
>
> I was wondering if anyone knew how to convert a text file to all 
> lowercase.

A standard way to do it uses the tr command.  For example:

 	paulproteus at alchemy:/tmp/hash_crack $ cat /etc/motd
 	Linux alchemy.localdomain 2.6.20-15-generic #2 SMP Sun Apr 15 07:36:31 UTC
 	2007 i686

 	The programs included with the Ubuntu system are free software;
 	the exact distribution terms for each program are described in the
 	individual files in /usr/share/doc/*/copyright.

 	Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
 	applicable law.

Whereas with a simple 'tr' filter:

 	paulproteus at alchemy:/tmp/hash_crack $ cat /etc/motd | tr [A-Z] [a-z]
 	linux alchemy.localdomain 2.6.20-15-generic #2 smp sun apr 15 07:36:31 utc
 	2007 i686

 	the programs included with the ubuntu system are free software;
 	the exact distribution terms for each program are described in the
 	individual files in /usr/share/doc/*/copyright.

 	ubuntu comes with absolutely no warranty, to the extent permitted by
 	applicable law.

-- Asheesh.

--
This is Unix we're talking about, remember.  It's not supposed to be
nice for the applications programmer.
 		-- Matthew Danish on debian-devel