posix_getgid Return the real group ID of the current process &reftitle.description; intposix_getgid Return the numeric real group ID of the current process. &reftitle.returnvalues; Returns the real group id, as an integer. &reftitle.examples; This example will print out the real group id, even once it the effective group id has been changed. ]]> &reftitle.seealso; posix_getgrgid for information on how to convert this into a useable group name posix_getegid get effective group id. posix_setgid change the effective group id POSIX man page GETGID(2)