[LBo] File permissions

[Troy]

On 6/17/07, Anita Lewis <a.lewis at linuxbasics.org> wrote:
Anita,

Thank you for taking your time to help me resolve this issue.  If I
understand correctly, you were experiencing the same thing when you tried
copying files from your usb hard drive.

Also, I noticed that even when I set the umask to 002, when I copy
> something into the directory, it keeps the permissions it had.  I think
> the umask only affects *created* files and not copied ones.


I checked on umask, and according to Wikpedia, umask affects newly created
files and directories, so you hit the nail on the head!


However, here is an easier way I think.  Use the 'install' command
> rather than 'cp'.  This command allows you to set group and permissions.
> See the manpage on it, but basically it is like this:


I tried moving some pictures from the compact flash to my hard drive this
morning using install, and it worked perfectly!  Now all I need to do is
learn how to create a script that I can place on my wife's Desktop, and she
can launch the script by clicking on an icon.  Is it possible to run scripts
by clicking an icon?


> This will give rw-rw-r-- on the files when they get there no matter what
> the permissions are in the destination. Since you already have the group
> suid set, you don't need to set the group as well, but that is also
> possible with 'install'.


Because everything now works, I'm afraid to change anything.  However, for
my own knowledge, do I need to have the group permission set gid, or does
just having both my wife and I members of the same group allow us to have rw
access to the pictures?


Thanks again for the help.

Troy