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GETUID(2) System Calls Manual GETUID(2) NAME getuid, geteuid - get user identity SYNOPSIS #include <sys/types.h> #include <unistd.h> uid_t getuid(void) uid_t geteuid(void) DESCRIPTION Getuid returns the real user ID of the current process, geteuid the ef- fective user ID. The real user ID identifies the person who is logged in. The effective user ID gives the process additional permissions during execution of "set-user-ID" mode processes, which use getuid to determine the real- user-id of the process that invoked them. SEE ALSO getgid(2), setuid(2). 4th Berkeley Distribution January 7, 1986 GETUID(2)