Advice on batch photo resizing.

[kulturloseramerikaner]

I need a photo archiving or manipulation program that can take all the jpg's from in a folder and downsize them as a group; does anyone know of a program for 'nix that can do this, or if there are several, what are your favorites? I recently got back from a trip in which I took at least 700 shots with a pair of Canon DSLRs that I need to post on an image-hosting site. I set the camera to record both the RAW files (which on the Canon have a .cr2 extension) and high-quality jpegs of each frame. Ideally I'd like to be able to resize the jpg's as copies while keeping the original high-res jpg's and RAWs. Obviously, resizing one-at-a-time in GIMP will be extremely time consuming so I need another option that hopefully won't involve ThatOtherOS.
Also, on a similar note, is there a plugin that will enable GIMP to read the .cr2's, or a better program for editing RAW files?

Thank you in advance.

[lovinglinux]

I recommend Phatch for batch processing and digikam for editing raw images and organizing your collection. DigiKam also has batch processing features.

[FakeOutdoorsman]

You can use ImageMagick. It contains the ever useful "convert" tool and can easily do batch style converting:
convert *.jpg -resize 120x120 newimage.jpg
The above example will convert all jpg files in the current directory and resize the largest dimension of the original to 120 pixels. You can also use a percentage:
convert *.jpg -resize 40% newimage.jpg

[cotcot]

And with ufraw you can manipulate the .cr2 and gimp-ufraw is the plugin for gimp to read them. The difference is that with gimp-ufraw you loose the high color depth. Gimp is limited to 8bit; ufraw can take 16 bit.

[kulturloseramerikaner]

Perfect thanks everyone.

[binbash]

+1 for phatch

[ubigT]

If you want another option you can have re-size and rotate extensions in your right click menu in Nautilus

sudo apt-get install nautilus-image-converter

I find it quite handy :)

[jo4hnc]

Here's a link to the Gimp plugin registry.

http://registry.gimp.org/

Lotsa stuff here.

John