Re: [gentoo-user] Simple command line stuff

[Drew Tomlinson]

Mark Knecht wrote:

>On 10/10/05, Spider (D.m.D. Lj.) <spider@g.o> wrote:
>
>
>>On Sun, 2005-10-09 at 19:06 -0700, Mark Knecht wrote:
>>
>>
>>>Hi,
>>>   I don't have a single book on Linux. (Amazing...) Can someone
>>>recommend a simple book on command line stuff, or better yet a good
>>>web site on this topic?
>>>
>>>   For instance, I wanted to run a specific command on every file in a
>>>directory which will create a new file, so I need to do
>>>
>>>command    file1.wav    file1-convert.wav
>>>
>>>I need to take each name, create a new name to build the actual
>>>command that gets run and then do that for every file in the
>>>directory, or even in a hierarchy of directories.
>>>
>>>Thanks,
>>>Mark
>>>
>>>
>>
>>For bash / zsh and other advanced(?-) shells:
>>
>>for f in *.wav; do command "$f" "${f/.wav/-convert.wav}";done
>>
>>The " " are there to prevent files with spaces in them (evil!) from
>>becoming too annoying and appearing as multiple commandline arguments.
>>
>>
>>//Spider
>>
>>
>>
>
>Thanks to all for the great answers and pointers. I appreciate it very much.
>
>Cheers,
>Mark
>
>

And just one more point.  The "for" loop is shell dependent and works in 
sh and its cousins.  But if you're using a csh based shell, it's 
"foreach".  Now I'm not commenting on what shells are better than others 
but just wanted to make the point for anyone who might follow this 
thread in the future.

Oh, and another thought.  The "find" command can do this for you as 
well, IIRC.

Cheers,

Drew
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