Resizing multiple image files at once

[J.Markoll]

Ronny Haryanto a écrit :
> On Sunday 15 January 2006 03:17, 'Forum Post, '@wailuku.xlogicgroup.com wrote:
>>Gimp works, but i have to do it picture for picture.
>>I have 64 images to go.... i dont like the idea that i have to do 50
>>images next week again..... so i am searching for the batch-method.
>>I can resize, but not a group of images.
> If you have imagemagick installed, you can cook a short bash script utilising 
> 'mogrify', like so (adjust seasoning to your liking):

> for img in *.jpg; do echo $img; mogrify -resize 640x480 $img; done
> Run 'mogrify -help' for more options. Other useful program from imagemagick 
> that I use quite often is 'convert'.
> Ciao,
> Ronny
Hi Ronny, if I say I'd like to read more precise explanations, would it 
be a problem ? yes I know difficult to be more precise. :(

Example, should it look like:
In a text editor,

#!/bin/sh
for img in *.jpg; do echo $img; mogrify -resize 640x480 $img; done

then 'save as' (for ex: image-resize) and then, make it executable with
chmod a+x

Mogrify, who is that entity ? the man!
**************************************
OVERVIEW
        The mogrify program is a member of the ImageMagick(1) suite of 
tools.  Use it to  resize  an  image,  blur,  crop,
        despeckle,  dither,  draw on, flip, join, re-sample, and much 
more. This tool is similiar to convert(1) except the
        original image file is overwritten with any changes you request.

        For more information about this command, point your browser to 
file:///usr/share/doc/ImageMagick-6.2.3/index.html.

        Run ‘mogrify -help’ to get a summary of the mogrify command options.
**************************************

That feels better.

And also, according to your knowledge is there a first steps imagemagick 
documentation ?
Thanks if you could bring the tiny details.
Greetings, Joyce Markoll.


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