[Eiciel,]

File Access Control List (ACL) permissions have been around for linux for quite some time, but it's one of those very useful features that for unknown reasons nobody talks about. They are an extension to the traditional and very limited unix User-Group-World permissions that allows the user to set access to the file system on a per-user basis. It's very similar to windows NTFS file permissions management.

There's a very nice extension for nautilus (gnome file browser) to manage file ACL. The extension is named Eiciel, and you can find it here:
http://rofi.roger-ferrer.org/eiciel/
If you have fedora, you can install it by typing in the command line:

Code:

sudo yum install eiciel

You also need to enable ACL for the partition. To do that you need to edit the /etc/fstab configuration file, and change the appropriate row. Where it says "defaults" should read "rw,acl" for ext2 and ext3 partitions, for example the line:

Code:

/dev/sdb5    /mnt/data     ext3    defaults    1 2

Should become:

Code:

/dev/sdb5    /mnt/data     ext3    rw,acl      1 2

And mount, or remount the partition with:

Code:

sudo mount /mnt/data

to mount it.

Code:

sudo mount -o remount /mnt/data

to remount it, if it was already mounted.

Now, if you right-click->Properties on a folder in that partition, you'll get a new "Access Control List" tab where you can set fine-grained access permissions easily. You can for example allow access to a folder to a single user, and not the rest of the users.

[Fwfstab]

Fwfstab is a very nice OS application to edit /etc/fstab file that I hope it get's integrated in gnome. If you are using fedora, you can just type in the command line:

Code:

$ sudo yum install fwfstab

Once installed you can find it in the Applications-> System Tools menu.

I find it very useful to edit such an important system file safely. I actually found it trying to explain a newbie how to enable ACL in a partition.

Home page:
http://www.diffingo.com/content/view/32/47/lang,en/

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