account permissions.

[Gregory Nowak]

I thought you could use letters as well with chmod where - means no
permision, and + before the letter means permision.
Greg


----- Original Message -----
From: Raul A. Gallegos <raul at asmodean.net>
To: <speakup at braille.uwo.ca>
Sent: Sunday, April 22, 2001 1:32 PM
Subject: Re: account permissions.


> You are definitely going to need to read the howtos on chmod and
permissions but here is a quick overview.  When you do an ls -l on a file or
directory you
> see at the left 10 characters.  I'll list them below and what they mean.
An example output might be something like:
>
> -rwxr-xr-x 1 raul users 1028 Mar 12 11:47 testfile
>
> The first part of the output is mainly what I'm going to describe.  These
are the permissions.  If it is a regular file the first character will be a
dash.  If it is a
> directory the first character will be a d.  In the example above we are
dealing with a file.  Following are 9 characters, where the first 3 are for
the owner
> permissions, second 3 are for group permissions and last 3 are for world
permissions.  The order of each set of 3 marks is rwx where if the attribute
is enabled
> you will see the letter and if not you will see a dash in its place.  r
means read, w means write and x means executable.  In the above example this
file is
> read/write/executable by owner and just read/executeable by group and
world.  This is a common state for a script which you want everyone to have
> access.
>
> The following shows the numbers corrisponding to the permissions to you
can change them.
>
> 0 = ---
> 1 = --x
> 2 = -w-
> 3 = -wx
> 4 = r--
> 5 = r-x
> 6 = rw-
> 7 = rwx
>
> To change permissions use chmod followed by a number followed by the
filename.  The number is a 3 digit number which means owner/group/world.  So
to
> set the permissions for this file I would have typed chmod 755 testfile.
If I only want the owner and group to have access to this file I can give it
770 or 750
> where 7 activates all attributes for this file for the owner and depending
on what I want either 7 will give the same permissions for a group or 5 will
give only
> read/execute permissions for the group.  In any case the world will not
have access to this file at all.  Once the permissions are set the way I
want I can
> create a group say called test and give only the users that I put in that
group access to this file.  For this you would need to chown the file to
root.test so that
> the root owns the file and test is the group it's in.  Then I add the
users to the test group and they would have access.
>
> As you can see this is only the surface I've touched on.  There is a lot
more to permissions and groups but this might give you a start.
>
> Regards.
>
> On Sat, 21 Apr 2001 01:01:38 -0400, Jack wrote:
>
> >i was curious if anyone knows how to apply permissions such as specific
> >directory access, access to specific programs or utilities, and time
limits
> >on specific users or accounts.
> >also i was wondering if it was possible to make groups with those
> >particular permissions set, so all i need do is asign the user or users
to
> >that group.
> >thanks
> >
> >
> >
> >_______________________________________________
> >Speakup mailing list
> >Speakup at braille.uwo.ca
> >http://speech.braille.uwo.ca/mailman/listinfo/speakup
> >
>
>
>
> Raul A. Gallegos -- raul at asmodean.net
> msn id: ragallegos at hotmail.com -- icq: 5283055
> http://www.asmodean.net
>
>
>
> _______________________________________________
> Speakup mailing list
> Speakup at braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
>