Managing Groups
Each user on a UNIX system belongs to a group. A group is a set of individuals. The users in a group might belong to the similar department; require access to a particular utility etc. The users can belong to any number of groups. Moreover, at any point of time the user should belong to only one group. This is due to the fact in which UNIX permits one group ID per user at any point in time. Groups could have their permissions set to enable their members to increase access to devices, files, directories, file systems etc., Group data is maintained in the file, /etc/gshadow and /etc/group.
The general system administrative tasks to be performed to manage groups are:
- Adding a group
- Adding users to new groups
- Deleting a group