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1.1 ! root 1: .pa 1 ! 2: .he 'WHO (I)'3/15/72'WHO (I)' ! 3: .ti 0 ! 4: NAME who -- who is on the system ! 5: .sp ! 6: .ti 0 ! 7: SYNOPSIS who___ [ who-file ] ! 8: .sp ! 9: .ti 0 ! 10: DESCRIPTION who___, without an argument, ! 11: lists the name, typewriter channel, and login time ! 12: for each current UNIX user. ! 13: ! 14: Without an argument, ! 15: who___ 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 who___ will list ! 22: logins, logouts, and crashes since the creation of ! 23: the wtmp file. ! 24: ! 25: Each login is listed with user name, last character ! 26: of input device name (with /dev/tty________ suppressed), ! 27: date and time. ! 28: Certain logouts produce a similar line without a user name. ! 29: Reboots produce a line with "x" in the place of the device name, ! 30: and a fossil time indicative of when the system went down. ! 31: .sp ! 32: .ti 0 ! 33: FILES /tmp/utmp ! 34: .sp ! 35: .ti 0 ! 36: SEE ALSO login(I), init(VII) ! 37: .sp ! 38: .ti 0 ! 39: DIAGNOSTICS "?" if a named file cannot be read. ! 40: .sp ! 41: .ti 0 ! 42: BUGS --
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