2.6.17 , sid
Hi,
Many times I'm getting "permission denied" even when working as a root . My questions :
1. Is there a guide / article that explain how can I change permissions for simple user and for root ?

2. When working with the KDE or GNOME (not through command line) , how can I tell the system to work as a root on all applications ?

3. Is there a simple explanation for how to use and operate SUDO ?

Thanks.

1. Is there a guide / article that explain how can I change permissions for simple user and for root ?
Firstly, if you get "permission denied" when working as root, then its likely that you tried to execute a file not marked as executable. You might need to:

Code:

chmod +x filename

Secondly, http://www.zzee.com/solutions/linux-permissions.shtml is a good guide to permissions.

2. When working with the KDE or GNOME (not through command line) , how can I tell the system to work as a root on all applications ?
The easiest way is to login as a root session. Use the username "root" and whatever you set your root password to. If you haven't set a root password (unlikely unless you're an Ubuntu user), use:

Code:

sudo passwd root

To setup your root password. Also make sure your login manager (gdm/kdm/whatever) allows root logins, as a very few (Ubuntu again) disable this by default.

3. Is there a simple explanation for how to use and operate SUDO ?
http://www.linuxdevcenter.com/linux/...sp?path=s/sudo is a good quick reference. Also, remember that most bash commands will list their usage and paramters by adding

Code:

 --help

and/or

Code:

 -h

after the command (note the space before the parameter).

Thanks.
no problem.

1) I'm not sure you should ever get a "permission denied" error for root, but here's a guide on setting permissions. You also might add your user to the "admin" group, which should give you a few more rights to edit certain files or run certain programs.

2) I don't know, you could make it so you can log in as root I guess. But this is bad practice and shouldn't really be done, so I'm not going to figure out how to do it. You can install gksu or similar that should let you run apps as root though.

3) Here, here, and here.

And just in case you're interested, here's a couple of good Debian specific websites.
http://aboutdebian.com/
http://www.debianhelp.co.uk/index.php