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| [9] | 1 | .TH WHO 1
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| 2 | .SH NAME
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| 3 | who \- print list of currently logged in users
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| 4 | .SH SYNOPSIS
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| 5 | \fBwho\fR [\fIfile\fR]\fR
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| 6 | .br
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| 7 | .de FL
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| 8 | .TP
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| 9 | \\fB\\$1\\fR
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| 10 | \\$2
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| 11 | ..
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| 12 | .de EX
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| 13 | .TP 20
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| 14 | \\fB\\$1\\fR
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| 15 | # \\$2
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| 16 | ..
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| 17 | .SH EXAMPLES
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| 18 | .EX "who " "Print user names, terminals and times"
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| 19 | .SH DESCRIPTION
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| 20 | .PP
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| 21 | \fIWho\fR prints a list of currently logged in users. For each one,
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| 22 | the user name, terminal, and login time is printed.
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| 23 | This program gets its information from the file \fI/etc/utmp\fR, which
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| 24 | is updated by init and login.
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| 25 | If the file does not exist, neither of these will create it, and
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| 26 | \fIwho\fR will not work. Note that if you decide to create an empty
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| 27 | \fI/usr/adm/wtmp\fR to enable the login accounting, it will grow forever and
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| 28 | eventually fill up your disk unless you manually truncate it from time to time.
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| 29 | If an optional file name is provided, the logins in that file will be printed.
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| 30 | .SH "SEE ALSO"
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| 31 | .BR utmp (5).
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