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getgrnam(3) [redhat man page]

GETGRNAM(3)						     Linux Programmer's Manual						       GETGRNAM(3)

NAME
getgrnam, getgrgid - get group file entry SYNOPSIS
#include <grp.h> #include <sys/types.h> struct group *getgrnam(const char *name); struct group *getgrgid(gid_t gid); DESCRIPTION
The getgrnam() function returns a pointer to a structure containing the group information from /etc/group for the entry that matches the group name name. The getgrgid() function returns a pointer to a structure containing the group information from /etc/group for the entry that matches the group gid gid. The group structure is defined in <grp.h> as follows: struct group { char *gr_name; /* group name */ char *gr_passwd; /* group password */ gid_t gr_gid; /* group id */ char **gr_mem; /* group members */ }; RETURN VALUE
The getgrnam() and getgrgid() functions return the group information structure, or NULL if the matching entry is not found or an error occurs. ERRORS
ENOMEM Insufficient memory to allocate group information structure. FILES
/etc/group Group database file CONFORMING TO
SVID 3, POSIX, BSD 4.3 SEE ALSO
fgetgrent(3), getgrent(3), setgrent(3), endgrent(3) GNU
1993-04-04 GETGRNAM(3)

Check Out this Related Man Page

GETGRENT(3)						     Linux Programmer's Manual						       GETGRENT(3)

NAME
getgrent, setgrent, endgrent - get group file entry SYNOPSIS
#include <grp.h> #include <sys/types.h> struct group *getgrent(void); void setgrent(void); void endgrent(void); DESCRIPTION
The getgrent() function returns a pointer to a structure containing the group information from /etc/group. The first time it is called it returns the first entry; thereafter, it returns successive entries. The setgrent() function rewinds the file pointer to the beginning of the /etc/group file. The endgrent() function closes the /etc/group file. The group structure is defined in <grp.h> as follows: struct group { char *gr_name; /* group name */ char *gr_passwd; /* group password */ gid_t gr_gid; /* group id */ char **gr_mem; /* group members */ }; RETURN VALUE
The getgrent() function returns the group information structure, or NULL if there are no more entries or an error occurs. ERRORS
ENOMEM Insufficient memory to allocate group information structure. FILES
/etc/group group database file CONFORMING TO
SVID 3, BSD 4.3 SEE ALSO
fgetgrent(3), getgrnam(3), getgrgid(3) GNU
1993-04-04 GETGRENT(3)

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