Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!rochester!rutgers!att!alberta!ubc-cs!van-bc!softop!jeff
From: jeff@softop.UUCP (Jeff)
Newsgroups: comp.unix.questions
Subject: Re: simple question about mv
Summary: look ma, no forks (well, almost none)
Message-ID: <233@softop.UUCP>
Date: 4 Feb 89 05:45:58 GMT
References: <18231@adm.BRL.MIL> <4093@omepd.UUCP> <626@jonlab.UUCP>
Organization: Soft Options, Vancouver, BC.
Lines: 32

In article <626@jonlab.UUCP>, jon@jonlab.UUCP (Jon H. LaBadie) writes:
> <deleted stuff about doing this>> 
> An alternative, is one command line to create a list of "root names"
> and loop through them.  For a large number of files, this could
> greatly enhance the efficiency of the processing.  Ksh users could
> improve upon this even more using the special substitution facilities
> of that shell.
> 
> 	for root in `ls *.flip | cut -d. -f1`
> 	do
> 		mv ${root}.flip ${root}.flop
> 	done
> 

Gee guys, what about csh.  I was RTFMing today (yes, and I'll admit it on
network postnews) and found ... drum roll ... the :x modifiers.  Specifically,
:r gives you the root (i.e. no extension) of a symbol.

So, I assert (yes folks, no testing), that the following is just what the 
doctor ordered

	foreach file-to-be-renamed (*$flip)
		mv $file-to-be-renamed ${file-to-be-renamed:r}.$flop
	end

And now I wait for the howls of derision.
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