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Annotation of 43BSDTahoe/man/man1/who.1, revision 1.1.1.1

1.1       root        1: .\"    @(#)who.1       6.2 (Berkeley) 12/10/86
                      2: .\"
                      3: .TH WHO 1 "December 10, 1986"
                      4: .AT 3
                      5: .SH NAME
                      6: who \- who is on the system
                      7: .SH SYNOPSIS
                      8: .B who
                      9: [ who-file ] [
                     10: .B "am I"
                     11: ]
                     12: .SH DESCRIPTION
                     13: \fIWho,\fP without any argument, reads the /etc/utmp file,
                     14: and lists the login name, terminal name, and login time for each
                     15: user currently logged into the system.  If a single argument is
                     16: given, \fIwho\fP uses that file instead of /etc/utmp.  Typically,
                     17: that file will be /usr/adm/wtmp, which contains a record of all
                     18: the logins, logouts, crashes, shutdowns and time changes since it
                     19: was created.  In either case, each login will be listed with the
                     20: user name, the terminal name (with "/dev/" suppressed), login date
                     21: and time, and, if applicable, the host logged in from.
                     22: .PP
                     23: If /usr/adm/wtmp is being used as the file, the user name may be empty
                     24: or one of the special characters '|', '}' and '~'.  Logouts produce
                     25: an output line without any user name.  For more information on the
                     26: special characters, see utmp(5).
                     27: .PP
                     28: With two arguments, as in `who am I' (and also `who are you'),
                     29: \fIwho\fP tells you who you are logged in as.
                     30: .SH FILES
                     31: .DT
                     32: /etc/utmp
                     33: .br
                     34: /usr/adm/wtmp
                     35: .SH "SEE ALSO"
                     36: last(1), users(1), getuid(2), utmp(5)

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