Section: Linux Programmer's Manual (3)
Return to Main Contents
updwtmp, logwtmp - append an entry to the wtmp file
void updwtmp(const char *wtmp_file, const struct utmp *ut);
void logwtmp(const char *line, const char *name, const char *host);
updwtmp() appends the utmp structure
to the wtmp file.
logwtmp() constructs a utmp structure using
line, name, host,
current time and current process ID.
Then it calls updwtmp() to append the structure to the utmp file.
Both functions are available under glibc2, but not under libc5.
used to occur in the old libbsd. These days, the
function is included in libutil. (Hence you'll need to add
to your compiler command line to get it.)
Not in POSIX.1-2001.
Present on Solaris, NetBSD, and perhaps other systems.
database of past user logins
- CONFORMING TO
- SEE ALSO
linux.jgfs.net manual pages