4BSD/usr/man/cat5/wtmp.5

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WTMP(5)             UNIX Programmer's Manual              WTMP(5)



NAME
     wtmp - user login history

DESCRIPTION
     This file records all logins and logouts.  Its format is
     exactly like _u_t_m_p(5) except that a null user name indicates
     a logout on the associated typewriter.  Furthermore, the
     typewriter name `~' indicates that the system was rebooted
     at the indicated time; the adjacent pair of entries with
     typewriter names `|' and `}' indicate the system-maintained
     time just before and just after a _d_a_t_e command has changed
     the system's idea of the time.

     _W_t_m_p is maintained by _l_o_g_i_n(1) and _i_n_i_t(8).  Neither of
     these programs creates the file, so if it is removed
     record-keeping is turned off.  It is summarized by _a_c(1).

FILES
     /usr/adm/wtmp

SEE ALSO
     utmp(5), login(1), init(8), ac(1), who(1)

































Printed 11/10/80                                                1