Name
getutent -- access utmp file entries	
Synopsis
| #include <utmp.h>
struct utmp *getutent(void); | 
Description
getutent() reads a line from the current file position in the utmp file. It returns a pointer to a structure containing the fields of the line.
Return Value
getutent() returns a pointer to a static struct utmp.
Errors
On error, (struct utmp*)0 will be returned.
Files
/var/run/utmp database of currently logged-in users
/var/log/wtmp database of past user logins