4.3BSD-Reno/share/man/cat5/gettytab.0
GETTYTAB(5) 1990 GETTYTAB(5)
NNAAMMEE
gettytab - terminal configuration data base
SSYYNNOOPPSSIISS
/etc/gettytab
DDEESSCCRRIIPPTTIIOONN
_G_e_t_t_y_t_a_b is a simplified version of the _t_e_r_m_c_a_p(5) data base
used to describe terminal lines. The initial terminal login
process _g_e_t_t_y(8) accesses the _g_e_t_t_y_t_a_b file each time it
starts, allowing simpler reconfiguration of terminal charac-
teristics. Each entry in the data base is used to describe
one class of terminals.
There is a default terminal class, _d_e_f_a_u_l_t, that is used to
set global defaults for all other classes. (That is, the
_d_e_f_a_u_l_t entry is read, then the entry for the class required
is used to override particular settings.)
CCAAPPAABBIILLIITTIIEESS
Refer to _t_e_r_m_c_a_p(5) for a description of the file layout.
The _d_e_f_a_u_l_t column below lists defaults obtained if there is
no entry in the table obtained, nor one in the special
_d_e_f_a_u_l_t table.
NNaammee TTyyppee DDeeffaauulltt DDeessccrriippttiioonn
ap bool false terminal uses any parity
bd num 0 backspace delay
bk str 0377 alternate end of line character (input break)
cb bool false use crt backspace mode
cd num 0 carriage-return delay
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 \n 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
fd num 0 form-feed (vertical motion) delay
fl str ^O output flush character
hc bool false do NOT hangup line on last close
he str NULL hostname editing string
hn str hostname hostname
ht bool false terminal has real tabs
ig bool false ignore garbage characters in login name
Printed 7/27/90 June 1
GETTYTAB(5) 1990 GETTYTAB(5)
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 /usr/bin/login program to exec when name obtained
nd num 0 newline (line-feed) delay
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 \0 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)
uc bool false terminal is known upper case only
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 speci-
fied. If the derivation should prove inadequate, any (or
all) of these three may be overriden with one of the ff00, ff11,
or ff22 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 _g_e_t_t_y receive a null character (presumed to indicate
a line break) it will restart using the table indicated by
the nnxx entry. If there is none, it will re-use its original
table.
Printed 7/27/90 June 2
GETTYTAB(5) 1990 GETTYTAB(5)
Delays are specified in milliseconds, the nearest possible
delay available in the tty driver will be used. Should
greater certainty be desired, delays with values 0, 1, 2,
and 3 are interpreted as choosing that particular delay
algorithm from the driver.
The ccll 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
ppcc.
The initial message, and login message, iimm and llmm may
include the character sequence %%hh or %%tt to obtain the host-
name or tty name respectively. (%%%% obtains a single '%'
character.) The hostname is normally obtained from the sys-
tem, but may be set by the hhnn table entry. In either case
it may be edited with hhee. The hhee string is a sequence of
characters, each character that is neither '@' nor '#' is
copied into the final hostname. A '@' in the hhee string,
causes one character from the real hostname to be copied to
the final hostname. A '#' in the hhee 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 lloo string
(usually "/usr/bin/login"), it will have set the enviroment
to include the terminal type, as indicated by the tttt string
(if it exists). The eevv string, can be used to enter addi-
tional data into the environment. It is a list of comma
separated strings, each of which will presumably be of the
form _n_a_m_e=_v_a_l_u_e.
If a non-zero timeout is specified, with ttoo, then getty will
exit within the indicated number of seconds, either having
received a login name and passed control to _l_o_g_i_n, or having
received an alarm signal, and exited. This may be useful to
hangup dial in lines.
Output from _g_e_t_t_y is even parity unless oopp is specified. OOpp
may be specified with aapp 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. _G_e_t_t_y does not check parity
of input characters in _R_A_W mode.
SSEEEE AALLSSOO
login(1), termcap(5), getty(8).
BBUUGGSS
The special characters (erase, kill, etc.) are reset to sys-
tem defaults by _l_o_g_i_n(1). In aallll cases, '#' or '^H' typed
in a login name will be treated as an erase character, and
Printed 7/27/90 June 3
GETTYTAB(5) 1990 GETTYTAB(5)
'@' will be treated as a kill character.
The delay stuff is a real crock. Apart form its general
lack of flexibility, some of the delay algorithms are not
implemented. The terminal driver should support sane delay
settings.
The hhee capability is stupid.
_T_e_r_m_c_a_p format is horrid, something more rational should
have been chosen.
Printed 7/27/90 June 4