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From: rouben@math13.math.umbc.edu (Rouben Rostamian)
Newsgroups: comp.editors
Subject: Re: Change cases in VI
Message-ID: <4658@umbc3.UMBC.EDU>
Date: 11 Dec 90 02:50:50 GMT
References: <1990Dec11.005842.13795@pa.dec.com>
Sender: newspost@umbc3.UMBC.EDU
Reply-To: rouben@math13.math.umbc.edu.UUCP (Rouben Rostamian)
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Organization: Mathematics Department University of Maryland, Baltimore County
Lines: 26

In article <1990Dec11.005842.13795@pa.dec.com> reader@wsl.dec.com (News Reader) writes:
>
>Is there an easy way to change the whole file from upper case to lower case or
>vice versa? I don't want to do 26 substitutions to change character by
>character.

If you insist on doing it in vi, here it is:
	:%s/./\U&/g
or alternatively:
	:%s/[a-z]/\U&/g
Both of these convert characters to uppercase.  To convert to lowercase
replace "U" with "L".

If you are not already editing the file, you should not start up vi;
use tr(1) instead:

	tr '[a-z]' '[A-Z]' <infile >outfile

Now let's see a slew of solutions using sed, ed, ex, awk, perl, C, BASIC
flow in.  :-(

--
Rouben Rostamian                            Telephone: (301) 455-2458
Department of Mathematics and Statistics    e-mail:
University of Maryland Baltimore County     bitnet: rostamian@umbc
Baltimore, MD 21228,  U.S.A.                internet: rostamian@umbc3.umbc.edu