File Permissions?

Longinus · 12-08-2003, 11:54 PM

hey guys

im having some trouble understanding the file permision stuff like when you do the ls command in the shell you get stuff like :

-rw-------
drwxr-xr-x
-rw-rw-r--
-rw-------

if anyone can clear some of that stuff up for me that would be great

stuNNed · 12-09-2003, 12:16 AM

the 1st 3 is for owner:

rwx -- r stands for read, w for write, x for execute

the 2nd 3 are for group

the 3rd set of 3 are for other or world

the one with d means it's a directory

ugob · 12-09-2003, 12:23 AM

r = read
w = write
x = execute

first dot: type of file (d = directory)

Then, divided in 3 sections of 3 dots

owner, group, others

therefore, in your example 1, owner can read/write, group and others have no permission.

in your example 2, the file is a directory,

owner has all permissions
group has only read - execute
others have read -execute

However, permissions on directoy are complicated. I can't treat them here.
hope this helps

jeempc · 12-09-2003, 07:38 AM

Look up the chmod command. That is how you change permisions.

ex. chmod a+x filename
That means members of the group can read the file.

If you are used to dos, chmod is like the arrtib command.
Jeempc

jeempc · 12-09-2003, 07:39 AM

chmod g+x means the group can read the file

chmod a+x means all can execute the file
...

ugob · 12-09-2003, 07:52 AM

Quote:

Originally posted by jeempc
chmod g+x means the group can read the file

chmod a+x means all can execute the file
...

You made a mistake...

chmod g+x means the group can execute the file... not read it.

ugob · 12-09-2003, 07:53 AM

Quote:

Originally posted by jeempc
Look up the chmod command. That is how you change permisions.

ex. chmod a+x filename
That means members of the group can read the file.

If you are used to dos, chmod is like the arrtib command.
Jeempc

You made a mistake, chmod a+x means all can execute the file, not group can read the file...

jeempc · 12-09-2003, 10:18 AM

Sorry for all the confusion. I will preview posts first. I caught another mistake

The dos command is attrib not atrrib

Thanks for the corrections.
J

fieldmethods · 12-09-2003, 05:14 PM

Longinus,

Try this page:

http://www.linuxman.com.cy/rute/node17.html

It's from an online book called "Rute Linux," which is very useful, and in my experience, often more accessible than going straight to the man pages.

Good luck!

-Pat

Longinus · 12-10-2003, 09:43 PM

thanks guys for all the help i think i have a better understading now