linux man page for geteuid

GETEUID(P)						     POSIX Programmer's Manual							GETEUID(P)

NAME
       geteuid - get the effective user ID

SYNOPSIS
       #include <unistd.h>

       uid_t geteuid(void);

DESCRIPTION
       The geteuid() function shall return the effective user ID of the calling process.

RETURN VALUE
       The geteuid() function shall always be successful and no return value is reserved to indicate an error.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       getegid()  ,  getgid()  , getuid() , setegid() , seteuid() , setgid() , setregid() , setreuid() , setuid() , the Base Definitions volume of
       IEEE Std 1003.1-2001, <sys/types.h>, <unistd.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and  the  original  IEEE
       and  The  Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003								GETEUID(P)