GETUIDSection: Linux Programmer's Manual (2)
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NAMEgetuid, geteuid - get user identity
DESCRIPTIONgetuid() returns the real user ID of the calling process.
ERRORSThese functions are always successful.
CONFORMING TOPOSIX.1-2001, 4.3BSD.
HistoryIn Unix V6 the getuid() call returned (euid << 8) + uid. Unix V7 introduced separate calls getuid() and geteuid().
SEE ALSOgetresuid(2), setreuid(2), setuid(2), credentials(7)
COLOPHONThis page is part of release 3.21 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.