GETTYTAB(5)							File Formats Manual						       GETTYTAB(5)

NAME

       gettytab - terminal configuration data base

SYNOPSIS

       /etc/gettytab

DESCRIPTION

       Gettytab  is a simplified version of the termcap(5) data base used to describe terminal lines.  The initial terminal login process getty(8)
       accesses the gettytab file each time it starts, allowing simpler reconfiguration of terminal characteristics.  Each entry in the data  base
       is used to describe one class of terminals.

       There  is  a  default  terminal	class, default, that is used to set global defaults for all other classes.  (That is, the default entry is
       read, then the entry for the class required is used to override particular settings.)

CAPABILITIES

       Refer to termcap(5) for a description of the file layout.  The default column below lists defaults obtained if there is no entry in the ta-
       ble obtained, nor one in the special default table.

       Name   Type  Default	   Description
       ap     bool  false	   terminal uses any parity
       bk     str   0377	   alternate end of line character (input break)
       cb     bool  false	   use crt backspace mode
       ce     bool  false	   use crt erase algorithm
       ck     bool  false	   use crt kill algorithm
       cl     str   NULL	   screen clear sequence
       co     bool  false	   console - add 
 after login prompt
       ds     str   ^Y		   delayed suspend character
       dx     bool  false	   set DECCTLQ
       ec     bool  false	   leave echo OFF
       ep     bool  false	   terminal uses even parity
       er     str   ^?		   erase character
       et     str   ^D		   end of text (EOF) character
       ev     str   NULL	   initial enviroment
       f0     num   unused	   tty mode flags to write messages
       f1     num   unused	   tty mode flags to read login name
       f2     num   unused	   tty mode flags to leave terminal as
       fl     str   ^O		   output flush character
       hc     bool  false	   do NOT hangup line on last close
       he     str   NULL	   hostname editing string
       hf     bool  false	   enable hardware (rts/cts) flow control
       hn     str   hostname	   hostname
       ht     bool  false	   terminal has real tabs
       ig     bool  false	   ignore garbage characters in login name
       im     str   NULL	   initial (banner) message
       in     str   ^C		   interrupt character
       is     num   unused	   input speed
       kl     str   ^U		   kill character
       lc     bool  false	   terminal has lower case
       lm     str   login:	   login prompt
       ln     str   ^V		   ``literal next'' character
       lo     str   /bin/login	   program to exec when name obtained
       nl     bool  false	   terminal has (or might have) a newline character
       nx     str   default	   next table (for auto speed selection)
       op     bool  false	   terminal uses odd parity
       os     num   unused	   output speed
       pc     str   		   pad character
       pe     bool  false	   use printer (hard copy) erase algorithm
       pf     num   0		   delay between first prompt and following flush (seconds)
       ps     bool  false	   line connected to a MICOM port selector
       qu     str   ^		   quit character
       rp     str   ^R		   line retype character
       rw     bool  false	   do NOT use raw for input, use cbreak
       sp     num   unused	   line speed (input and output)
       su     str   ^Z		   suspend character
       tc     str   none	   table continuation
       to     num   0		   timeout (seconds)
       tt     str   NULL	   terminal type (for enviroment)
       ub     bool  false	   do unbuffered output (of prompts etc)
       we     str   ^W		   word erase character
       xc     bool  false	   do NOT echo control chars as ^X
       xf     str   ^S		   XOFF (stop output) character
       xn     str   ^Q		   XON (start output) character

       If  no  line  speed  is specified, speed will not be altered from that which prevails when getty is entered.  Specifying an input or output
       speed will override line speed for stated direction only.

       Terminal modes to be used for the output of the message, for input of the login name, and to leave the terminal set as upon completion, are
       derived from the boolean flags specified.  If the derivation should prove inadequate, any (or all) of these three may be overriden with one
       of the f0, f1, or f2 numeric specifications, which can be used to specify (usually in octal, with a leading '0') the exact  values  of  the
       flags.  Local (new tty) flags are set in the top 16 bits of this (32 bit) value.

       Should  getty  receive  a  null character (presumed to indicate a line break) it will restart using the table indicated by the nx entry. If
       there is none, it will re-use its original table.

       The cl screen clear string may be preceded by a (decimal) number of milliseconds of delay required (a la termcap).  This delay is simulated
       by repeated use of the pad character pc.

       The  initial  message,  and login message, im and lm may include the character sequence %h or %t to obtain the hostname or tty name respec-
       tively.	(%% obtains a single '%' character.)  The hostname is normally obtained from the system, but may be set by the hn table entry.	In
       either case it may be edited with he.  The he string is a sequence of characters, each character that is neither '@' nor '#' is copied into
       the final hostname.  A '@' in the he string, causes one character from the real hostname to be copied to the final hostname.  A '#' in  the
       he string, causes the next character of the real hostname to be skipped.  Surplus '@' and '#' characters are ignored.

       When  getty execs the login process, given in the lo string (usually "/bin/login"), it will have set the enviroment to include the terminal
       type, as indicated by the tt string (if it exists).  The ev string, can be used to enter additional data into the  environment.	 It  is  a
       list of comma separated strings, each of which will presumably be of the form name=value.

       If  a  non-zero	timeout is specified, with to, then getty will exit within the indicated number of seconds, either having received a login
       name and passed control to login, or having received an alarm signal, and exited.  This may be useful to hangup dial in lines.

       Output from getty is even parity unless op is specified.  Op may be specified with ap to allow any parity on input, but generate odd parity
       output.	 Note: this only applies while getty is being run, terminal driver limitations prevent a more complete implementation.	Getty does
       not check parity of input characters in RAW mode.

SEE ALSO

       login(1), termcap(5), getty(8).

BUGS

       The special characters (erase, kill, etc.) are reset to system defaults by login(1).  In all cases, '#' or '^H' typed in a login name  will
       be treated as an erase character, and '@' will be treated as a kill character.

       The delay stuff is a real crock.  It has been removed from the system entirely.	The he capability is stupid.

       Termcap format is horrid, something more rational should have been chosen.

4.2 Berkeley Distribution					  March 28, 1997						       GETTYTAB(5)