Re: Batch processing of JPEG images

On Tue, 20 Jun 2006 23:18:59 +0100, Bonge Boo! <bingbong@xxxxxxxxxxx>
wrote:

On 20/6/06 21:18, in article
00mg929lq19i2ht39846gudta238n71tft@xxxxxxxxxxxxxxxxxxxxxxx, "Jaimie
Vandenbergh" <jaimie@xxxxxxxxxxxxxxxxxxxxx> wrote:

Or if you're feeling geekie, I use imagemagick from the command line.

<Warning>Your weekend may disappear if you attempt this</Warning>

Yup.

And it doesn't work recursively either, so if you've got loadsasubfolders
don't try it.

Shirley you can fudge it into a `find -exec` command line?

Probably. But I'm lazy, and I'm usually doing a few folders with a few
hundred files in, so haven't been fussed to going looking. If tomorrow is
slack I might take a look.

Bash isn't my thing.

S'not bash, s'find. Which has a strange and special format all of it's
own, but it's ded gud.

Simple form, all one line:

find (filename matching regexp) -exec (command line you want to do to
each found file) {} \;

The {} is the placeholder where each filename is put as it's found.
The \; is an "end of -exec" marker, so you can put more terms after
it. Each term is processed in order, left to right:

eg

find "~/*.tmp" -exec rm {} \;

should be obvious, while the more involved

find "*.log" -size +1M -print -exec cp {} ~/biglogslivehere/ \;
-exec rm {} \;

finds all *.log files larger than 1meg, prints each filename to the
screen, then copies it to a folder, then deletes the original.

Note that each file is processed completely before the next one is
found, can be important.

The "-print" bit is very handy, to validate your regexp before you go
around -exec rm {}'ing things.

Cheers - Jaimie (who probably got the -size parameter wrong)
--
Happiness, n.: An agreeable sensation arising from contemplating the
misery of another. - Ambrose Bierce, The Devil's Dictionary
.

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