Sorting out owner and group permissions...

[John Almberg]

I have a directory called 'scans' that is owned by 'master', but I  
want to allow 'customer' to FTP images to that directory. This is the  
way I have permissions set:

# ls -l
drwxrwxr-x  5 master  customer     251904 Apr 20 10:29 scans

The problem is that when customer ftp's a file to the directory, the  
permissions end up like this:

-rw-r-----  1 customer customer  772584 Apr 20 15:28 image.jpg

When a process run by 'master' tries to copy this file to another  
directory (also owned by master), I get the following:

# cp scans/image.jpg thumbs/image.jpg
cp: scans/image.jpg: Permission denied

The only solution that occurs to me smells like a newbie kludge: to  
have a root cron job periodically chown all the images to  
master:customer. This seems like the proverbial sledgehammer. There  
must be a better way?

Any thoughts, much appreciated!

-- John