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1.1 ! root 1: .th WRITE I 8/5/73 ! 2: .sh NAME ! 3: write \*- write to another user ! 4: .sh SYNOPSIS ! 5: .bd write ! 6: user [ ttyno ] ! 7: .sh DESCRIPTION ! 8: .it Write ! 9: copies lines from your typewriter to that of ! 10: another user. ! 11: When first called, ! 12: it sends the message ! 13: .s3 ! 14: message from yourname... ! 15: .s3 ! 16: The recipient of the message should write back at this point. ! 17: Communication continues until an end of file is ! 18: read from the typewriter or an interrupt is sent. ! 19: At that point ! 20: .it write ! 21: writes `EOT' on the other terminal and exits. ! 22: .s3 ! 23: If you want to write to a user who is logged in more than once, ! 24: the ! 25: .it ttyno ! 26: argument may be used to indicate the last character ! 27: of the appropriate typewriter name. ! 28: .s3 ! 29: Permission to write may be denied or granted by use of the ! 30: .it mesg ! 31: command. ! 32: At the outset writing is allowed. ! 33: Certain commands, in particular ! 34: .it roff ! 35: and ! 36: .it pr, ! 37: disallow ! 38: messages in order to prevent messy output. ! 39: .s3 ! 40: If the character `!' is found at the beginning of a line, ! 41: .it write ! 42: calls the mini-shell ! 43: .it msh ! 44: to execute the rest of the ! 45: line as a command. ! 46: .s3 ! 47: The following protocol is suggested for using ! 48: .it write: ! 49: when you first write to another user, wait for him to ! 50: write back before starting to send. ! 51: Each party should end each message with a distinctive ! 52: signal ! 53: ( ! 54: .bd (o) ! 55: for `over' is conventional) that the other may reply. ! 56: .bd (oo) ! 57: (for `over and out') is suggested when conversation ! 58: is about to be terminated. ! 59: .sh FILES ! 60: /tmp/utmp to find user ! 61: .br ! 62: /etc/msh to execute `!' ! 63: .sh "SEE ALSO" ! 64: mesg(I), who(I) ! 65: .sh BUGS
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