SIMPLE SOLUTIONS

GETGID(2) - man page online | system calls

Get group identity.

Chapter
2015-08-08
GETGID(2)                           Linux Programmer's Manual                           GETGID(2)

NAME getgid, getegid - get group identity
SYNOPSIS #include <unistd.h> #include <sys/types.h> gid_t getgid(void); gid_t getegid(void);
DESCRIPTION getgid() returns the real group ID of the calling process. getegid() returns the effective group ID of the calling process.
ERRORS These functions are always successful.
CONFORMING TO POSIX.1-2001, POSIX.1-2008, 4.3BSD.
NOTES The original Linux getgid() and getegid() system calls supported only 16-bit group IDs. Subsequently, Linux 2.4 added getgid32() and getegid32(), supporting 32-bit IDs. The glibc getgid() and getegid() wrapper functions transparently deal with the variations across kernel versions.
SEE ALSO getresgid(2), setgid(2), setregid(2), credentials(7)
COLOPHON This page is part of release 4.04 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/.
Linux 2015-08-08 GETGID(2)
This manual Reference Other manuals
getgid(2) referred by credentials(7) | gawk(1) | getegid(2freebsd) | geteuid(2freebsd) | getgid(2freebsd) | getgroups(2) | getresgid(2freebsd) | getresuid(2freebsd) | getuid(2freebsd) | group_member(3) | mksh(1) | posh(1) | procenv(1) | ps(1) | setegid(2freebsd) | seteuid(2freebsd) | setgid(2) | setgid(2freebsd) | setregid(2freebsd) | setresgid(2freebsd)
refer to credentials(7) | getresuid(2) | setgid(2) | setreuid(2)