GETGIDSection: Linux Programmer's Manual (2)
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NAMEgetgid, getegid - get group identity
DESCRIPTIONgetgid() returns the real group ID of the calling process.
ERRORSThese functions are always successful.
CONFORMING TOPOSIX.1-2001, 4.3BSD.
SEE ALSOgetresgid(2), setgid(2), setregid(2), credentials(7)
COLOPHONThis page is part of release 3.21 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.