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Old 06-24-2007, 07:57 PM   #1
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Permissions troubles

I'm having loads of trouble managing permissions in my kubuntu distro. Pretty much every file I care about has been set up as owner-root, group-root with permissions as follows: rwxr-xr-x. I have tried every conceivable way I know of, and have read about, to change the permissions so that the group has rwx privileges. Nor can I figure out a way to change the group to the one I want. Something is fundamentally wrong, but I can't figure it out.

For example, trying to modify a jpg file I've typed (in the terminal):

sudo chmod -v g+w img_0164.jpg

And this is what I'll get:

mode of 'img_0164.jpg' changed to 0775 (rwxrwxr-x)

So, you'd think I'd be all set. However, when I do:

ls -l img_0164.jpg

This is what I get:

-rwxr-xr-x 1 root root .....bla bla

As you can see, group still doesn't have write permissions. This is very frustrating. I'd appreciate your help!

By the way, these files are all on a FAT32 disk. I don't have dual boot, but I needed to keep FAT32 to keep all my files in tact from the transition from Windows.

Last edited by JEBBEDIAH C; 06-24-2007 at 08:09 PM.
Old 06-25-2007, 01:57 AM   #2
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FAT32 is a windows filesystem. It has absolutely no concept of lunux's owner:group or permissions, so the attributes of individual files on a FAT32 disk cannot be changed with chmod.

The default permissions for all the files on that FAT32 disk are determined by how it was mounted on your linux filesystem. So, how was it mounted? Either you did it yourself (what command did you use?) or the system mounted it for you at boot time (take a look in /etc/fstab and look at the line that refers to your FAT32 disk. man fstab and man mount will tell you the available options).


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