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Annotation of 43BSDTahoe/man/man5/gettytab.5, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1983 Regents of the University of California.
        !             2: .\" All rights reserved.  The Berkeley software License Agreement
        !             3: .\" specifies the terms and conditions for redistribution.
        !             4: .\"
        !             5: .\"    @(#)gettytab.5  6.3 (Berkeley) 5/19/86
        !             6: .\"
        !             7: .TH GETTYTAB 5 "May 19, 1986"
        !             8: .UC 5
        !             9: .SH NAME
        !            10: gettytab \- terminal configuration data base
        !            11: .SH SYNOPSIS
        !            12: /etc/gettytab
        !            13: .SH DESCRIPTION
        !            14: .I Gettytab
        !            15: is a simplified version of the
        !            16: .IR termcap (5)
        !            17: data base
        !            18: used to describe terminal lines.
        !            19: The initial terminal login process
        !            20: .IR getty (8)
        !            21: accesses the
        !            22: .I gettytab
        !            23: file each time it starts, allowing simpler
        !            24: reconfiguration of terminal characteristics.
        !            25: Each entry in the data base
        !            26: is used to describe one class of terminals.
        !            27: .PP
        !            28: There is a default terminal class,
        !            29: .IR default ,
        !            30: that is used to set global defaults for all other classes.
        !            31: (That is, the
        !            32: .I default 
        !            33: entry is read, then the entry for the class required
        !            34: is used to override particular settings.)
        !            35: .SH CAPABILITIES
        !            36: Refer to
        !            37: .IR termcap (5)
        !            38: for a description of the file layout.
        !            39: The
        !            40: .I default
        !            41: column below lists defaults obtained if there is
        !            42: no entry in the table obtained, nor one in the special
        !            43: .I default
        !            44: table.
        !            45: .nf
        !            46: 
        !            47: .ta \w'k0-k9  'u +\w'Type  'u +\w'``/bin/login"  'u
        !            48: \fBName        Type    Default Description\fR
        !            49: ap     bool    false   terminal uses any parity
        !            50: bd     num     0       backspace delay
        !            51: bk     str     0377    alternate end of line character (input break)
        !            52: cb     bool    false   use crt backspace mode
        !            53: cd     num     0       carriage-return delay
        !            54: ce     bool    false   use crt erase algorithm
        !            55: ck     bool    false   use crt kill algorithm
        !            56: cl     str     NULL    screen clear sequence
        !            57: co     bool    false   console - add \\n after login prompt
        !            58: ds     str     ^Y      delayed suspend character
        !            59: dx     bool    false   set DECCTLQ
        !            60: ec     bool    false   leave echo \s-2OFF\s0
        !            61: ep     bool    false   terminal uses even parity
        !            62: er     str     ^?      erase character
        !            63: et     str     ^D      end of text (\s-2EOF\s0) character
        !            64: ev     str     NULL    initial enviroment
        !            65: f0     num     unused  tty mode flags to write messages
        !            66: f1     num     unused  tty mode flags to read login name
        !            67: f2     num     unused  tty mode flags to leave terminal as
        !            68: fd     num     0       form-feed (vertical motion) delay
        !            69: fl     str     ^O      output flush character
        !            70: hc     bool    false   do \s-2NOT\s0 hangup line on last close
        !            71: he     str     NULL    hostname editing string
        !            72: hn     str     hostname        hostname
        !            73: ht     bool    false   terminal has real tabs
        !            74: ig     bool    false   ignore garbage characters in login name
        !            75: im     str     NULL    initial (banner) message
        !            76: in     str     ^C      interrupt character
        !            77: is     num     unused  input speed
        !            78: kl     str     ^U      kill character
        !            79: lc     bool    false   terminal has lower case
        !            80: lm     str     login:  login prompt
        !            81: ln     str     ^V      ``literal next'' character
        !            82: lo     str     /bin/login      program to exec when name obtained
        !            83: nd     num     0       newline (line-feed) delay
        !            84: nl     bool    false   terminal has (or might have) a newline character
        !            85: nx     str     default next table (for auto speed selection)
        !            86: op     bool    false   terminal uses odd parity
        !            87: os     num     unused  output speed
        !            88: pc     str     \\0     pad character
        !            89: pe     bool    false   use printer (hard copy) erase algorithm
        !            90: pf     num     0       delay between first prompt and following flush (seconds)
        !            91: ps     bool    false   line connected to a MICOM port selector
        !            92: qu     str     ^\\     quit character
        !            93: rp     str     ^R      line retype character
        !            94: rw     bool    false   do \s-2NOT\s0 use raw for input, use cbreak
        !            95: sp     num     unused  line speed (input and output)
        !            96: su     str     ^Z      suspend character
        !            97: tc     str     none    table continuation
        !            98: to     num     0       timeout (seconds)
        !            99: tt     str     NULL    terminal type (for enviroment)
        !           100: ub     bool    false   do unbuffered output (of prompts etc)
        !           101: uc     bool    false   terminal is known upper case only
        !           102: we     str     ^W      word erase character
        !           103: xc     bool    false   do \s-2NOT\s0 echo control chars as ^X
        !           104: xf     str     ^S      XOFF (stop output) character
        !           105: xn     str     ^Q      XON (start output) character
        !           106: .br
        !           107: .fi
        !           108: .PP
        !           109: If no line speed is specified, speed will not be altered
        !           110: from that which prevails when getty is entered.
        !           111: Specifying an input or output speed will override
        !           112: line speed for stated direction only.
        !           113: .PP
        !           114: Terminal modes to be used for the output of the message,
        !           115: for input of the login name,
        !           116: and to leave the terminal set as upon completion,
        !           117: are derived from the boolean flags specified.
        !           118: If the derivation should prove inadequate,
        !           119: any (or all) of these three may be overriden
        !           120: with one of the
        !           121: .BR f0 ,
        !           122: .BR f1 ", or"
        !           123: .B f2
        !           124: numeric specifications, which can be used to specify
        !           125: (usually in octal, with a leading '0')
        !           126: the exact values of the flags.
        !           127: Local (new tty) flags are set in the top 16 bits
        !           128: of this (32 bit) value.
        !           129: .PP
        !           130: Should
        !           131: .I getty
        !           132: receive a null character
        !           133: (presumed to indicate a line break)
        !           134: it will restart using the table indicated by the
        !           135: .B nx
        !           136: entry. If there is none, it will re-use its original table.
        !           137: .PP
        !           138: Delays are specified in milliseconds, the nearest possible
        !           139: delay available in the tty driver will be used.
        !           140: Should greater certainty be desired, delays
        !           141: with values 0, 1, 2, and 3 are interpreted as
        !           142: choosing that particular delay algorithm from the driver.
        !           143: .PP
        !           144: The
        !           145: .B cl
        !           146: screen clear string may be preceded by a (decimal) number
        !           147: of milliseconds of delay required (a la termcap).
        !           148: This delay is simulated by repeated use of the pad character
        !           149: .BR pc .
        !           150: .PP
        !           151: The initial message, and login message,
        !           152: .B im
        !           153: and
        !           154: .B lm
        !           155: may include the character sequence \fB%h\fP or \fB%t\fP to obtain
        !           156: the hostname or tty name respectively.
        !           157: (\fB%%\fP obtains a single '%' character.)
        !           158: The hostname is normally obtained from the system,
        !           159: but may be set by the
        !           160: .B hn
        !           161: table entry.
        !           162: In either case it may be edited with
        !           163: .BR he .
        !           164: The
        !           165: .B he
        !           166: string is a sequence of characters, each character that
        !           167: is neither '@' nor '#' is copied into the final hostname.
        !           168: A '@' in the
        !           169: .B he
        !           170: string, causes one character from the real hostname to
        !           171: be copied to the final hostname.
        !           172: A '#' in the
        !           173: .B he
        !           174: string, causes the next character of the real hostname
        !           175: to be skipped.
        !           176: Surplus '@' and '#' characters are ignored.
        !           177: .PP
        !           178: When getty execs the login process, given
        !           179: in the
        !           180: .B lo
        !           181: string (usually "/bin/login"), it will have set
        !           182: the enviroment to include the terminal type, as indicated
        !           183: by the
        !           184: .B tt
        !           185: string (if it exists).
        !           186: The
        !           187: .B ev
        !           188: string, can be used to enter additional data into
        !           189: the environment.
        !           190: It is a list of comma separated strings, each of which
        !           191: will presumably be of the form
        !           192: .IR name=value .
        !           193: .PP
        !           194: If a non-zero timeout is specified, with
        !           195: .BR to ,
        !           196: then getty will exit within the indicated
        !           197: number of seconds, either having
        !           198: received a login name and passed control
        !           199: to
        !           200: .IR login ,
        !           201: or having received an alarm signal, and exited.
        !           202: This may be useful to hangup dial in lines.
        !           203: .PP
        !           204: Output from
        !           205: .I getty
        !           206: is even parity unless
        !           207: .B op
        !           208: is specified.
        !           209: .B Op
        !           210: may be specified with
        !           211: .B ap
        !           212: to allow any parity on input, but generate odd parity output.
        !           213: Note: this only applies while getty is being run,
        !           214: terminal driver limitations prevent a more complete
        !           215: implementation.
        !           216: .I Getty
        !           217: does not check parity of input characters in
        !           218: .I RAW
        !           219: mode.
        !           220: .SH "SEE ALSO"
        !           221: login(1),
        !           222: termcap(5),
        !           223: getty(8).
        !           224: .SH BUGS
        !           225: The special characters (erase, kill, etc.) are reset to system defaults
        !           226: by
        !           227: .IR login (1).
        !           228: In
        !           229: .B all
        !           230: cases, '#' or '^H' typed in a login name will be treated as
        !           231: an erase character, and '@' will be treated as a kill character.
        !           232: .PP
        !           233: The delay stuff is a real crock.
        !           234: Apart form its general lack of flexibility, some
        !           235: of the delay algorithms are not implemented.
        !           236: The terminal driver should support sane delay settings.
        !           237: .PP
        !           238: The
        !           239: .B he
        !           240: capability is stupid.
        !           241: .PP
        !           242: .I Termcap
        !           243: format is horrid, something more rational should
        !           244: have been chosen.

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