getuid(2) - Linux man page
Name
getuid, geteuid - get user identity
Synopsis
#include <unistd.h>
#include <sys/types.h>
uid_t getuid(void);
uid_t geteuid(void);
Description
getuid() 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 Also
setreuid(2),
setuid(2)
Referenced By
awk(1),
credentials(7),
getlogin_r(3),
getresuid(2),
mksh(1),
ps(1),
setpgid(2),
setresuid(2),
syscalls(2)
