Understanding Access Rights

[znx]

Understanding Access Permissions

Using file/directory permissions can be a little bit tricky when you come from the Microsoft world. At some points I will say "root" or more correctly UID 0, these things are the same.

 

Main Utilities:

chmod - Change access permissions of files

chown - Change file owner and group

 

And for more experienced users:

stat - Display file or filesystem status

 

The access rights determine if a process can access a file in a particular method. These rights specify read, write and execute and are further controlled by user, group and other.

 

Quick glance at how file permissions look:

Code:

znx@loud $ ls -l file
-rw-r-----  1 znx users 0 Aug 28 01:37 file

 

Taking each bit as it goes:

 

-

This represents the file type, file (-) and directory (d) are all you need right now,

there are more but it will just confuse matters.

 

rw-

The first three indicate the permissions for the file owner (znx), read

[Condor]

nice tutorial..

 

Condor

[xDamox]

Good tutorials znx :) hope to see this on tutorials.linux-noob.com

[znx]

nice tutorial...

 

thank you.. :)

 

Good tutorials znx :) hope to see this on tutorials.linux-noob.com

 

Yeah, im going to expand it to include ACLs as I have to deal with these constantly at work, after which it will defn. be in with the tutorials B)

[anyweb]

topic pinned and moved

 

nice one znx, keep up the good work dude !

 

cheers

 

anyweb

[znx]

Wow .. took me long enough to add the stuff about ACLs :)

[anyweb]

Wow .. took me long enough to add the stuff about ACLs :)

 

heh, better late than never :)(that's one of my favorite mottos, and it's so true)

 

good work znx :)

 

cheers

anyweb

[Green Possum]

One small nit. It's UID 0 that's root's UID, not UID 1.

[znx]

Thanks so much Green Possum, how could I miss something so obvious hehe :)! Fixed