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Shell Programming and Scripting
Need advice for project UNIX to Linux migration
Post 302994856 by Scott on Tuesday 28th of March 2017 05:44:52 PM
03-28-2017
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LEARN ABOUT XFREE86
geteuid32
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); DESCRIPTION
getuid() returns the real user ID of the calling process. geteuid() returns the effective user ID of the calling process. ERRORS
These functions are always successful. CONFORMING TO
POSIX.1-2001, POSIX.1-2008, 4.3BSD. NOTES
History In UNIX V6 the getuid() call returned (euid << 8) + uid. UNIX V7 introduced separate calls getuid() and geteuid(). The original Linux getuid() and geteuid() system calls supported only 16-bit user IDs. Subsequently, Linux 2.4 added getuid32() and geteuid32(), supporting 32-bit IDs. The glibc getuid() and geteuid() wrapper functions transparently deal with the variations across ker- nel versions. SEE ALSO
getresuid(2), setreuid(2), setuid(2), credentials(7) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. Linux 2017-09-15 GETUID(2)