So, in my system, I have user ‘nick’ that corresponds to me, but I also have user ‘www’ which corresponds to the privileges necessary to operate the local webserver (“Understanding Unix Permissions And Chmod”, 2008).
Groups Users can be organized in groups. A user may belong to one or more groups of users. The concept of groups serves the purpose of assigning sets of privileges for a given resource and sharing them among many users that need to have them (“Understanding Unix Permissions And Chmod”, 2008).
Scenario
In a hypothetical scenario where we have 5000 users and we seek to grant 4990 of those uses access to a file, granting this sort of protection scheme using Unix could be achieved a few different ways, some of which would include: • Each of the 4,990 users can be added to a ‘group”, and then utilize the allow access to the file by that group. • Create an Access Control List (ACL) and assign access according to that list. • Specify a group of users that cannot access the file and allow any user not on the list to have access. Password protect the file and give the password to users that are allowed access to the file. In both large and small enterprises, the need may frequently arise to allow access of a file, or files to a select group. The ability to grant this sort of protection scheme using Unix would therefore be essential to performing such tasks. Reference Understanding UNIX permissions and chmod. (2008).
The Essay on Access Control Lists: Identify Rsources, Users and Groups
An Access Control List (ACL) is a list of Access Control Entries (ACE) that identify resources and the users or groups of users who have permission to access those resources. The resources may include files, hardware or processes on the network. In simpler terms, an ACL is a list of permissions that are attached to an object on your network. Objects can include hardware like printers, files and ...
Retrieved from http://www. perlfect. com/articles/chmod. Understanding UNIX permissions and chmod. (2008).
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