Special group & user privileges Post: 302467262

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Top Forums Shell Programming and Scripting Special group & user privileges Post 302467262 by LibRid on Thursday 28th of October 2010 07:52:44 PM

10-28-2010

Registered User

Alright thank you Scrutinizer and agn.

I will list below the current script; however, I've encountered my last problem.

-I want to make the group BANNED, have no access to the files with .log extension
-I want to make the group WRITEABLE, have write access to the files with .log extension

How can I do that if a file can only be assigned to one group?
I've already assigned the group BANNED to the .log files already, so now i'm stuck with the WRITEABLE group and how I can also assign the group to .log files with BANNED group.

Here is my current script

Code:

  #Input of new users
echo "Please enter new username"
echo "User 1..."
read newUser1
echo "User 2..."
read newUser2
echo "User 3..."
read newUser3
echo "User 4..."
read newUser4
echo "User 5..."
read newUser5

#Input of new groups
echo "Please enter name of group one"
read group1
echo "Please enter name of group two"
read group2


#creates 2 groups
sudo groupadd $group1
sudo groupadd $group2

#creates first 3 users and adds them to group 1
echo "Assigning users: $newUser1, $newUser2, $newUser3, to group $group1"
sudo useradd -m -s /bin/bash -G $group1 $newUser1
sudo useradd -m -s /bin/bash -G $group1 $newUser2
sudo useradd -m -s /bin/bash -G $group1 $newUser3

#creates last 2 users and adds them to group 2
echo "Assigning users: $newUser4, $newUser5, to group $group2"
sudo useradd -m -s /bin/bash -G $group2 $newUser4
sudo useradd -m -s /bin/bash -G $group2 $newUser5

#creates an extra two groups for BANNED and WRITE-able users
sudo groupadd banned
sudo groupadd writeable

#applies group privileges
sudo chgrp $group1 *.dat
sudo chmod 774 *.dat
sudo chgrp $group2 config*
sudo chmod 774 config*
sudo usermod -G banned $newUser2
sudo usermod -G banned $newUser4
sudo chgrp banned *.log
sudo chmod 704 *.log
sudo usermod -G writeable $newUser3
sudo usermod -G writeable $newUser5 #hm, how can I add the group writeable to *.log, when group banned is already assigned? And how can I give them special permissions?



#applies user privileges
chown $newUser1 *.txt
chmod 771 *.txt

---------- Post updated at 07:52 PM ---------- Previous update was at 07:18 PM ----------

Oh! One way this could be done is just chmod the .log files. Where X= whatever

Code:

 chmod xx2

However this would be for everyone else, not just the other users or users in WRITEABLE group.

LibRid

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privgrp

privgrp(5)							File Formats Manual							privgrp(5)

NAME

       privgrp - HP-UX group privileges

DESCRIPTION

       HP-UX  allows  subletting of limited superuser-like privileges to all users or to members of a particular group or groups.  This capability
       is deprecated and only existing applications should use it.  The newer fine-grained privilege facilities described in privileges(5)  should
       be used by new applications.

       The header defines the following symbolic privilege names: and

       All  but  one of the group privileges are supported as fine-grained privileges and described in privileges(5).  The one group privilege not
       supported as a fine-grained privilege is:

	      Permits the use of the
			     and system calls for changing respectively the real user ID and real group ID of a  process  (see	setuid(2)).   This
			     behavior  of  is  deprecated  and	only legacy applications should use it.  Newer applications should use and respec-
			     tively, to achieve the same effect.  (No special privileges required.)

       The header defines two additional symbolic constants:

	      defines the maximum number of groups with special privileges.
			     Of this maximum, one is reserved for global privileges (granted to all processes) and the remainder can  be  assigned
			     to actual group IDs.

	      defines the size of the multi-word mask used
			     in defining privileges associated with a group ID.

       The and commands and the and system calls may be used to define and query the privilege group associations.

       The group privileges are automatically initialized from the contents of (see privgrp(4)) at boot time.

WARNINGS

       This mechanism is deprecated and only legacy applications should use it.  See privileges(5) for a description of fine-grained privileges.

SEE ALSO

       getprivgrp(1),  setprivgrp(1M), chown(2), getprivgrp(2), lockf(2), mpctl(2), plock(2), pset_create(2), rtprio(2), rtsched(2), serialize(2),
       setgid(2), setuid(2), shmctl(2), privgrp(4), privileges(5).

																	privgrp(5)