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32 .\" @(#)who.1 8.2 (Berkeley) 12/30/93
40 .Nd display who is on the system
49 utility displays information about currently logged in users.
50 By default, this includes the login name, tty name, date and time of login and
51 remote hostname if not local.
53 The options are as follows:
54 .Bl -tag -width indent
56 Write column headings above the output.
58 Show information about the terminal attached to standard input only.
61 List the names and number of logged in users in columns.
62 All other command line options are ignored.
64 Show the name, line and time fields only.
67 Indicate whether each user is accepting messages.
68 One of the following characters is written:
70 .Bl -tag -width 1n -compact
72 User is accepting messages.
74 User is not accepting messages.
79 Show idle time for each user in hours and minutes as
80 .Ar hh Ns : Ns Ar mm ,
82 if the user has been idle less that a minute, and
84 if the user has been idle more than 24 hours.
92 gathers information from the file
96 may be specified which is usually
99 .Pa /var/log/wtmp.[0-6]
100 depending on site policy as
102 can grow quite large and daily versions may or may not
103 be kept around after compression by
107 file contains a record of every login, logout,
108 crash, shutdown and date change
111 was last truncated or
116 is being used as the file, the user name may be empty
117 or one of the special characters '|', '}' and '~'.
119 an output line without any user name.
120 For more information on the
121 special characters, see
125 .Ev COLUMNS , LANG , LC_ALL
128 environment variables affect the execution of
133 .Bl -tag -width /var/log/wtmp.[0-6] -compact
136 .It Pa /var/log/wtmp.[0-6]