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1.1 ! root 1: .th WHO I 3/15/72 ! 2: .sh NAME ! 3: who \*- who is on the system ! 4: .sh SYNOPSIS ! 5: .bd who ! 6: [ who-file ] ! 7: .sh DESCRIPTION ! 8: .it Who, ! 9: without an argument, ! 10: lists the name, typewriter channel, and login time ! 11: for each current UNIX user. ! 12: .s3 ! 13: Without an argument, ! 14: .it who ! 15: examines the /tmp/utmp ! 16: file to obtain its information. ! 17: If a file is given, that file is examined. ! 18: Typically the given file will be /tmp/wtmp, ! 19: which contains a record of all the logins since it ! 20: was created. ! 21: Then ! 22: .it who ! 23: will list ! 24: logins, logouts, and crashes since the creation of ! 25: the wtmp file. ! 26: .s3 ! 27: Each login is listed with user name, ! 28: typewriter name (with `/dev/' ! 29: suppressed), ! 30: and date and time. ! 31: When an argument is given, logouts produce a similar line without a user name. ! 32: Reboots produce a line with `x' in the place of the device name, ! 33: and a fossil time indicative of when the system went down. ! 34: .sh FILES ! 35: /tmp/utmp ! 36: .sh "SEE ALSO" ! 37: login(I), init(VII) ! 38: .sh BUGS
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