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Re: Automatic way of applying the same command to a bunch of files



On 9/20/06, Steven W. Orr <steveo syslang net> wrote:
=>Paul Smith wrote:
=>> On 9/20/06, Andy Green <andy warmcat com> wrote:
=>> > >> 12\ Missa\ brevis\ in\ G,\ KV\ 140App,\ C1.\ 12\ Agnus\ Dei.wav
=>> > >
=>> > > Perhaps the best strategy is to eliminate all '\' and then use "$i".
=>> > > However, I do not know how to implement it.
=>> >
=>> > No Paul Howarth's method was best, the problem is probably coming from
=>> > the commas.  For example, can you do the sox by hand with that filename
=>> > even?
=>>
=>> Yes, I can, Andy.
=>
=>Hm well this works for me with the filename
=>
=>$ ls *.wav
=>12 Missa brevis in G, KV 140App, C1. 12 Agnus Dei.wav
=>
=>for i in *\ * ; do sox "$i" -r 44100 -t wav "output_$i" ; done
=>
=>You need the -t otherwise sox gets confused trying to work it out from the
=>suffix; because it contains dots in the file part it complains that the type "
=>12 Agnus Dei.wav" is unknown without -t.

find . -name \*.wav -print0 | \
   xargs -0 sox "{}" -r 44100 -t wav "output_{}"

I forget what the search criteria was. Just pee in the -name arg for
taste.

Thanks, Steven and Andy. The last Andy's solution works fine. However,
with Steven's one, I get the following:

$ find . -name \*.wav -print0 | xargs -0 sox "{}" -r 44100 -t wav "output_{}"
sox: Can't open input file '{}': No such file or directory
$

But 'find . -name \*.wav -print' gives me the complete list of wav
files in the directory.

Paul


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