1GETTYTAB(5) File Formats Manual GETTYTAB(5)
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6 gettytab - terminal configuration data base
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9 /etc/gettytab
10
12 Gettytab is a simplified version of the termcap(5) data base used to
13 describe terminal lines. The initial terminal login process getty(8)
14 accesses the gettytab file each time it starts, allowing simpler recon‐
15 figuration of terminal characteristics. Each entry in the data base is
16 used to describe one class of terminals.
17 There is a default terminal class, default, that is used to set global
19 defaults for all other classes. (That is, the default entry is read,
20 then the entry for the class required is used to override particular
21 settings.)
22
24 Refer to termcap(5) for a description of the file layout. The default
25 column below lists defaults obtained if there is no entry in the table
26 obtained, nor one in the special default table.
27 Name Type Default Description
29 ap bool false terminal uses any parity
30 bk str 0377 alternate end of line character (input break)
31 cb bool false use crt backspace mode
32 ce bool false use crt erase algorithm
33 ck bool false use crt kill algorithm
34 cl str NULL screen clear sequence
35 co bool false console - add \n after login prompt
36 ds str ^Y delayed suspend character
37 dx bool false set DECCTLQ
38 ec bool false leave echo OFF
39 ep bool false terminal uses even parity
40 er str ^? erase character
41 et str ^D end of text (EOF) character
42 ev str NULL initial enviroment
43 f0 num unused tty mode flags to write messages
44 f1 num unused tty mode flags to read login name
45 f2 num unused tty mode flags to leave terminal as
46 fl str ^O output flush character
47 hc bool false do NOT hangup line on last close
48 he str NULL hostname editing string
49 hf bool false enable hardware (rts/cts) flow control
50 hn str hostname hostname
51 ht bool false terminal has real tabs
52 ig bool false ignore garbage characters in login name
53 im str NULL initial (banner) message
54 in str ^C interrupt character
55 is num unused input speed
56 kl str ^U kill character
57 lc bool false terminal has lower case
58 lm str login: login prompt
59 ln str ^V ``literal next'' character
60 lo str /bin/login program to exec when name obtained
61 nl bool false terminal has (or might have) a newline character
62 nx str default next table (for auto speed selection)
63 op bool false terminal uses odd parity
64 os num unused output speed
65 pc str \0 pad character
66 pe bool false use printer (hard copy) erase algorithm
67 pf num 0 delay between first prompt and following flush (seconds)
68 ps bool false line connected to a MICOM port selector
69 qu str ^\ quit character
70 rp str ^R line retype character
71 rw bool false do NOT use raw for input, use cbreak
72 sp num unused line speed (input and output)
73 su str ^Z suspend character
74 tc str none table continuation
75 to num 0 timeout (seconds)
76 tt str NULL terminal type (for enviroment)
77 ub bool false do unbuffered output (of prompts etc)
78 we str ^W word erase character
79 xc bool false do NOT echo control chars as ^X
80 xf str ^S XOFF (stop output) character
81 xn str ^Q XON (start output) character
82 If no line speed is specified, speed will not be altered from that
84 which prevails when getty is entered. Specifying an input or output
85 speed will override line speed for stated direction only.
86 Terminal modes to be used for the output of the message, for input of
88 the login name, and to leave the terminal set as upon completion, are
89 derived from the boolean flags specified. If the derivation should
90 prove inadequate, any (or all) of these three may be overriden with one
91 of the f0, f1, or f2 numeric specifications, which can be used to spec‐
92 ify (usually in octal, with a leading '0') the exact values of the
93 flags. Local (new tty) flags are set in the top 16 bits of this (32
94 bit) value.
95 Should getty receive a null character (presumed to indicate a line
97 break) it will restart using the table indicated by the nx entry. If
98 there is none, it will re-use its original table.
99 The cl screen clear string may be preceded by a (decimal) number of
101 milliseconds of delay required (a la termcap). This delay is simulated
102 by repeated use of the pad character pc.
103 The initial message, and login message, im and lm may include the char‐
105 acter sequence %h or %t to obtain the hostname or tty name respec‐
106 tively. (%% obtains a single '%' character.) The hostname is normally
107 obtained from the system, but may be set by the hn table entry. In
108 either case it may be edited with he. The he string is a sequence of
109 characters, each character that is neither '@' nor '#' is copied into
110 the final hostname. A '@' in the he string, causes one character from
111 the real hostname to be copied to the final hostname. A '#' in the he
112 string, causes the next character of the real hostname to be skipped.
113 Surplus '@' and '#' characters are ignored.
114 When getty execs the login process, given in the lo string (usually
116 "/bin/login"), it will have set the enviroment to include the terminal
117 type, as indicated by the tt string (if it exists). The ev string, can
118 be used to enter additional data into the environment. It is a list of
119 comma separated strings, each of which will presumably be of the form
120 name=value.
121 If a non-zero timeout is specified, with to, then getty will exit
123 within the indicated number of seconds, either having received a login
124 name and passed control to login, or having received an alarm signal,
125 and exited. This may be useful to hangup dial in lines.
126 Output from getty is even parity unless op is specified. Op may be
128 specified with ap to allow any parity on input, but generate odd parity
129 output. Note: this only applies while getty is being run, terminal
130 driver limitations prevent a more complete implementation. Getty does
131 not check parity of input characters in RAW mode.
132
134 login(1), termcap(5), getty(8).
135
137 The special characters (erase, kill, etc.) are reset to system defaults
138 by login(1). In all cases, '#' or '^H' typed in a login name will be
139 treated as an erase character, and '@' will be treated as a kill char‐
140 acter.
141 The delay stuff is a real crock. It has been removed from the system
143 entirely. The he capability is stupid.
144 Termcap format is horrid, something more rational should have been cho‐
146 sen.
1474.2 Berkeley Distribution March 28, 1997 GETTYTAB(5)