.\" Copyright (c) 1983 Regents of the University of California. .\" All rights reserved. The Berkeley software License Agreement .\" specifies the terms and conditions for redistribution. .\" .\" @(#)getgid.2 6.2 (Berkeley) 1/7/86 .\" .TH GETGID 2 "January 7, 1986" .UC 5 .SH NAME getgid, getegid \- get group identity .SH SYNOPSIS .nf .ft B #include #include gid_t getgid(void) gid_t getegid(void) .fi .SH DESCRIPTION .B Getgid returns the real group ID of the current process, .B getegid the effective group ID. .PP The real group ID is specified at login time. .PP The effective group ID is more transient, and determines additional access permission during execution of a ``set-group-ID'' process, and it is for such processes that \fBgetgid\fP is most useful. .SH "SEE ALSO" .BR getuid (2), .BR setgid (2).