In article , "Mayayana"
writes:

| I've been using this to make thumbnails of jpeg files:
|
| for img in *.JPG; do
| echo thumbnailing $img
| convert -geometry 105x70 $img $img
| done
|

Are people supposed to know what OS/software
you're using that code with?

No, but it shouldn't be necessary to get the gist of the above.

I wonder why you don't just extract the thumbnails
when possible. Don't your cameras create them in
the JPGs? It should be quicker and yield better
quality images.

Maybe they do; I don't know. How can I check.

For the same size, why should they be better quality?