HP-UX Reference (11i v1 05/09) - 4 File Formats (vol 8)

u
utmp(4) utmp(4)
FILES
/etc/utmp
/var/adm/wtmp
/var/adm/btmp
AUTHOR
utmp, wtmp, and btmp were developed by HP and the University of California, Berkeley.
SEE ALSO
last(1), login(1), who(1), write(1), acctcon(1M), fwtmp(1M), getut(3C).
STANDARDS CONFORMANCE
<
utmp.h>: XPG2
Section 4−−372 Hewlett-Packard Company − 2 − HP-UX 11i Version 1: September 2005