hey, im trying to write a simple bash script, and im hopping for a little help.

im making a script that eventualy i want to add to the nautilus menu "open with" for image files. so that i can right click on that file and have it converted to a png and a gif format without opening a program.

the script will look something like this:

convert PleaseConvertMe.jpg output.png
convert PleaseConvertMe.jpg output.gif
mv output.png /home/userid/imagecache/output.png
mv output.gif /home/userid/imagecache/output.gif

the problem im having is how do i make the program know what image i am right clicking on in nautilus?
aka(i think) how do i give the /path/to/PleaseConvertMe.jpg as an argument?

The filename(s) will be passed via the command line, so you can access them with $1, $2, $3 (...), or $* for all at once. I don't have nautilus or gnome, so I can't test that this works, but that's how it appears from the scripts on g-scripts.sourceforge.net.

Your sample script is a bit heavy for a simple conversion.
The following should do just as well
Or if you're converting the same image into 2 formats, this might even work:
The second one might not work, depending on how convert works.

Edit: Apparently the second one doesn't work...I just tested it and got an error