GETUID(2) Linux Programmer's Manual GETUID(2)NAME
getuid, geteuid - get user identity
SYNOPSIS
#include <unistd.h>
#include <sys/types.h>
uid_t getuid(void);
uid_t geteuid(void);
DESCRIPTIONgetuid() returns the real user ID of the current process.
geteuid() returns the effective user ID of the current process.
ERRORS
These functions are always successful.
CONFORMING TO
POSIX.1-2001, 4.3BSD.
HISTORY
In Unix V6 the getuid() call returned (euid << 8) + uid. Unix V7
introduced separate calls getuid() and geteuid().
SEE ALSOsetreuid(2), setuid(2)Linux 0.99.11 1993-07-23 GETUID(2)