30.14.1 The Data Structure for a Group

The functions and data structures for accessing the system group database are declared in the header file grp.h.

Data Type: struct group

The group structure is used to hold information about an entry in the system group database. It has at least the following members:

char *gr_name

The name of the group.

gid_t gr_gid

The group ID of the group.

char **gr_mem

A vector of pointers to the names of users in the group. Each user name is a null-terminated string, and the vector itself is terminated by a null pointer.