1. Home
  2. Computing & Technology
  3. Linux
Linux / Unix Command: geteuid
Command Library

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.

The real ID corresponds to the ID of the calling process. The effective ID corresponds to the set ID bit on the file being executed.  

ERRORS

These functions are always successful.  

CONFORMING TO

POSIX, BSD 4.3.  

SEE ALSO

setreuid(2), setuid(2)


Important: Use the man command (% man) to see how a command is used on your particular computer.

>> Linux/Unix Command Library

>> Shell Command Library

Explore Linux
About.com Special Features

The Best Web Trends of the Decade

A look back at the best innovations, ideas and technologies over the last 10 years, More >

Family Tech Center

Stay connected and entertained with reviews on tips on the latest HDTVs, cellphones and more. More >

  1. Home
  2. Computing & Technology
  3. Linux

©2009 About.com, a part of The New York Times Company.

All rights reserved.