2:geteuid

From Linux Man Pages

      getuid, geteuid - get user identity
      

Contents 1 SYNOPSIS 2 DESCRIPTION 3 ERRORS 4 CONFORMING TO 5 HISTORY 6 RELATED 7 CATEGORY

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().

RELATED

      setreuid(2), setuid(2)

CATEGORY