On Mon, Oct 26, 2009 at 12:03 PM, Maheboob Shaikh <[email protected]>wrote:
> > > > > hi all linux friends, > > I m student Ultramax class, i want to know about differenece between > primary group & secondary group as it is a part of user administration . > > I want to know how it can be used? > I would be very greatful to all of you if you assist me in this case with > examples. > > Because ,By the next month , I am going to give RHCT & RHCE Exams. > > plz give me some notes if u have > > Thanks with Regards > > Maheboob Shaikh > 9867813456 > ----------------------------------------------- Hi, Below are the difference: A primary group is the group id that gets used when you create files and/or directories. Secondary groups are used to control permissions on files and/or directories. In other words, any file/directory with a group id that you are a member of (primary or otherwise) will grant you access according to the group permissions. Primary group: The file and directory created by the user will belong to the Primary group. Secondary Group: Say a file / directory belongs to group "opensource", all the users who are member of this group by any means (i.e. this group is primary or secondary group of those users), will be able to access that file / directory. Ofcourse the level of access will depend upon the permisson this group is having on that file and on the conditions that this group is primary or secondary for those users. Mubeen Nakade. [Non-text portions of this message have been removed]
