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GETLOGIN(3) Library Functions Manual GETLOGIN(3) NAME getlogin - get login name SYNOPSIS char *getlogin() DESCRIPTION Getlogin returns a pointer to the login name as found in /etc/utmp. It may be used in conjunction with getpwnam to locate the correct password file entry when the same userid is shared by several login names. If getlogin is called within a process that is not attached to a type‐ writer, it returns NULL. The correct procedure for determining the lo‐ gin name is to first call getlogin and if it fails, to call getpwuid. FILES /etc/utmp SEE ALSO getpwent(3), getgrent(3), utmp(5), getuid(2) DIAGNOSTICS Returns NULL (0) if name not found. BUGS The return values point to static data whose content is overwritten by each call. GETLOGIN(3)