Resizing digital photos on the road

Hey, I'm travelling to Europe this summer and hoping to keep up a weblog on the fly... I'm planning to use two servers, one for my weblog and one for storage. I'd like to use the storage one for the original hi-rez pictures off the camera so I can develop the ones I like from home. However I'd also like to post a few pictures directly to my blog... is there a good way to resize the pictures I send to the server for web use while travelling?

If you're using a Unix or Linux server you may be able to use the 'convert -geometry' command through a telnet terminal to resize the image.

Example: convert -geometry 450x450 exampleImage.jpg resultantImage.jpg (maintains the same aspect ratio and picks the largest image possible within the specified dimensions... in this case largest side will be 450)

also of possible use

convert -rotate 90 exampleImage.jpg resultantImage.jpg (rotates your image 90 degrees clockwise, -90 for counter)

Thanks to Paul Sack for sending me the solution, I've only posted it here for future use by forum members.

This is part of the ImageMagick package which is also available for unfortunate Windows users:
http://www.imagemagick.org/www/download.html

It is indeed a great tool.