osf1 man page for getgid

getgid(2)							System Calls Manual							 getgid(2)

NAME
       getgid, getegid - Gets the process group ID

SYNOPSIS
       #include <unistd.h>

       gid_t getgid (void);

       gid_t getegid (void);

       Application  developers	may  want  to  specify an #include statement for <sys/types.h> before the one for <unistd.h> if programs are being
       developed for multiple platforms. The additional #include statement is not required on Tru64 UNIX systems or by ISO  or	X/Open	standards,
       but may be required on other vendors' systems that conform to these standards.

STANDARDS
       Interfaces documented on this reference page conform to industry standards as follows:

       getgid(), getegid():  POSIX.1, XPG4, XPG4-UNIX

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

DESCRIPTION
       The getgid() function returns the real group ID of the calling process.

       The getegid() function returns the effective group ID of the calling process.

       The real group ID is specified at login time.  The effective group ID is more transient, and determines additional access permission during
       execution of a ``set-group-ID'' process.  It is for such processes that the getgid() function is most useful.

RETURN VALUES
       The getgid() and getegid() functions return the requested group ID.  They are always successful.

RELATED INFORMATION
       Commands: groups(1)

       Functions: getgroups(2), initgroups(3), setgroups(2), setregid(2)

       Standards: standards(5) delim off

																	 getgid(2)