I am using Rox-Filer. Some jpg image files appear as thumbnails (about 5%) but the others don't. Has anyone had a similar problem? Does anyone know how to solve it?
Thanks

Hmmm. On investigation, it seems that some (5%) of my .jpg files have different permissions to the others. I don't remember doing anything different - but perhaps the thumbnails I can see are of .jpg files edited in Gimp?

The files I can see are "img_001.jpg File rw-/r--/r--/---"
but the ones I can't see are "img_002.jpg File rwx/r-x/r-x/---

Is there any reason why I shouldn't change all of my .jpg file permissions to rw-/r--/r--/--- ? What is the syntax to do that from the command line? This is all new to me...
Please help!
Thanks
(apologies if I'm asking the obvious - I'm worried about my pictures.)

cd into the directory where your jpgs are and do:
chmod 644 *

this will change all the files in that directory to have the rw-/r--/r-- permissions.

thanks but ... er! I wish I'd delayed on that one. Now I can't see thumbnails or anything in any program. As root - yes. As user - NO!
My .jpegs have gone!!
I know that they are still there. How do I set my permissions again?
HELP!

as root try this:

chown username *

this makes it so the user you are talking about owns all those files, that might work.

and to explain permissions, they work as bits.

execute - 1
write - 2
read - 4

you just add them up to create combinations

the the 3 different "bit places" for 644 are: (user)(group)(world)

so 644 would give the user read and write, the group read only, and the rest of the world read only.

and 777 would give everyone full access.

I hope that helped.