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Annotation of researchv10dc/dist/man/v4/man7/getty.7, revision 1.1

1.1     ! root        1: .th GETTY VII 9/19/73
        !             2: .sh NAME
        !             3: getty  \*- set typewriter mode
        !             4: .sh SYNOPSIS
        !             5: .bd /etc/getty
        !             6: .sh DESCRIPTION
        !             7: .it Getty
        !             8: is invoked
        !             9: by
        !            10: .it "init (VII)"
        !            11: immediately after a typewriter is opened
        !            12: following a dial-up.
        !            13: The user's login name is read and the login(I) command
        !            14: is called with this name as an argument.
        !            15: While reading this name
        !            16: .it getty
        !            17: attempts to adapt the system to the speed and type of terminal
        !            18: being used.
        !            19: .s3
        !            20: .it Getty
        !            21: initially sets the speed of the interface to 150 baud,
        !            22: specifies that raw mode is to be used (break on every character),
        !            23: that echo is to be suppressed, and either parity
        !            24: allowed.
        !            25: It types the ``login:'' message
        !            26: (which includes the characters which put the 37 Teletype
        !            27: terminal into full-duplex and unlock its keyboard).
        !            28: Then the user's name is read, a character at a time.
        !            29: If a null character is received, it is assumed to be the result
        !            30: of the user pushing the ``break'' (``interrupt'') key.
        !            31: The speed is then
        !            32: changed to 300 baud and the ``login:'' is typed again,
        !            33: this time with the appropriate
        !            34: sequence which puts a GE TermiNet 300 into full-duplex.
        !            35: This sequence is acceptable to other 300 baud terminals also.
        !            36: If a subsequent null character is received,
        !            37: the speed is changed back to 150 baud.
        !            38: .s3
        !            39: The user's name is terminated by a new-line or
        !            40: carriage-return character.
        !            41: The latter results in the system being set to
        !            42: to treat carriage returns appropriately (see stty(II)).
        !            43: .s3
        !            44: The user's name is scanned to see if
        !            45: it contains any lower-case alphabetic characters; if not,
        !            46: and if the name is nonempty, the
        !            47: system is told to map any future upper-case characters
        !            48: into the corresponding lower-case characters.
        !            49: Thus UNIX is usable from upper-case-only terminals.
        !            50: .s3
        !            51: Finally, login is called with the user's name as argument.
        !            52: .sh "SEE ALSO"
        !            53: init(VII), login(I), stty(II)

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