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28 .\" @(#)who.1 8.2 (Berkeley) 12/30/93
36 .Nd display who is on the system
45 utility displays information about currently logged in users.
46 By default, this includes the login name, tty name, date and time of login and
47 remote hostname if not local.
49 The options are as follows:
50 .Bl -tag -width indent
54 with the exception that output is not restricted to the time and date of
55 the last system reboot.
57 Write the time and date of the last system reboot.
59 Write column headings above the output.
61 Show information about the terminal attached to standard input only.
64 List the names and number of logged in users in columns.
65 All other command line options are ignored.
67 Show the name, line and time fields only.
70 Indicate whether each user is accepting messages.
71 One of the following characters is written:
73 .Bl -tag -width 1n -compact
75 User is accepting messages.
77 User is not accepting messages.
82 Show idle time for each user in hours and minutes as
83 .Ar hh Ns : Ns Ar mm ,
85 if the user has been idle less than a minute, and
87 if the user has been idle more than 24 hours.
95 gathers information from the file
96 .Pa /var/run/utx.active .
99 may be specified which is usually
102 .Pa /var/log/utx.log.[0-6]
103 depending on site policy as
105 can grow quite large and daily versions may or may not
106 be kept around after compression by
110 file contains a record of every login, logout,
111 crash, shutdown and date change
114 was last truncated or
119 is being used as the file, the user name may be empty
120 or one of the special characters '|', '}' and '~'.
122 an output line without any user name.
123 For more information on the
124 special characters, see
128 .Ev COLUMNS , LANG , LC_ALL
131 environment variables affect the execution of
136 .Bl -tag -width /var/log/utx.log.[0-6] -compact
137 .It Pa /var/run/utx.active
138 .It Pa /var/log/utx.log
139 .It Pa /var/log/utx.log.[0-6]