posix_getuid Return the real user ID of the current process &reftitle.description; intposix_getuid Return the numeric real user ID of the current process. &reftitle.returnvalues; Returns the user id, as an integer &reftitle.examples; Example use of <function>posix_getuid</function> ]]> &reftitle.seealso; posix_getpwuid POSIX man page GETUID(2)