Annotation of src/usr.bin/who/who.1, Revision 1.10
1.10 ! aaron 1: .\" $OpenBSD: who.1,v 1.9 2000/03/06 03:17:41 aaron Exp $
1.1 deraadt 2: .\" $NetBSD: who.1,v 1.5 1994/12/07 04:28:47 jtc Exp $
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35: .\" @(#)who.1 8.2 (Berkeley) 12/30/93
36: .\"
37: .Dd December 6, 1994
38: .Dt WHO 1
39: .Os
40: .Sh NAME
41: .Nm who
42: .Nd display who is logged in
43: .Sh SYNOPSIS
44: .Nm who
45: .Op Fl mTu
1.7 aaron 46: .Op Ar file
1.1 deraadt 47: .Nm who
48: .Ar am i
49: .Sh DESCRIPTION
1.7 aaron 50: The
51: .Nm
1.1 deraadt 52: utility displays a list of all users currently logged on, showing for
53: each user the login name, tty name, the date and time of login, and
54: hostname if not local.
55: .Pp
1.8 aaron 56: The options are as follows:
1.1 deraadt 57: .Bl -tag -width file
58: .It Fl m
1.10 ! aaron 59: Only print information about the current terminal.
! 60: This is the
1.1 deraadt 61: .Tn POSIX
62: way of saying
1.7 aaron 63: .Nm
1.1 deraadt 64: .Ar am i .
1.4 denny 65: .It Fl q
66: (Quick.) List only the names and the number of users currently
67: logged on. When this option is used, all other options are ignored.
1.1 deraadt 68: .It Fl T
69: Print a character after the user name indicating the state of the
70: terminal line:
1.7 aaron 71: .Sq +
1.1 deraadt 72: if the terminal is writable;
1.7 aaron 73: .Sq \-
1.1 deraadt 74: if it is not;
75: and
76: .Sq ?
77: if a bad line is encountered.
78: .It Fl u
79: Print the idle time for each user.
1.3 flipk 80: .It Fl H
81: Write column headings above the regular output.
1.1 deraadt 82: .It Ar \&am I
1.7 aaron 83: Returns the invoker's real user name.
1.1 deraadt 84: .It Ar file
85: By default,
1.7 aaron 86: .Nm
1.1 deraadt 87: gathers information from the file
88: .Pa /var/run/utmp .
89: An alternate
90: .Ar file
91: may be specified which is usually
92: .Pa /var/log/wtmp
93: (or
94: .Pa /var/log/wtmp.[0-6]
95: depending on site policy as
96: .Pa wtmp
97: can grow quite large and daily versions may or may not
98: be kept around after compression by
99: .Xr ac 8 ) .
100: The
101: .Pa wtmp
102: file contains a record of every login, logout,
103: crash, shutdown and date change
104: since
105: .Pa wtmp
106: was last truncated or
107: created.
108: .El
109: .Pp
110: If
111: .Pa /var/log/wtmp
112: is being used as the file, the user name may be empty
1.10 ! aaron 113: or one of the special characters
! 114: .Ql | ,
! 115: .Ql } ,
! 116: and
! 117: .Ql \&~ .
! 118: Logouts produce an output line without any user name.
! 119: For more information on the special characters, see
1.1 deraadt 120: .Xr utmp 5 .
121: .Sh FILES
122: .Bl -tag -width /var/log/wtmp.[0-6] -compact
123: .It Pa /var/run/utmp
124: .It Pa /var/log/wtmp
125: .It Pa /var/log/wtmp.[0-6]
126: .El
127: .Sh SEE ALSO
128: .Xr last 1 ,
129: .Xr mesg 1 ,
130: .Xr users 1 ,
131: .Xr getuid 2 ,
132: .Xr utmp 5
1.9 aaron 133: .Sh STANDARDS
134: The
135: .Nm
136: utility is expected to conform to
137: .St -p1003.2-92 .
1.1 deraadt 138: .Sh HISTORY
139: A
140: .Nm
141: utility appeared in
142: .At v6 .