TSET(C) XENIX System V TSET(C)
Name
tset - Sets terminal modes.
Syntax
tset [ - ] [ -hrsuIQS ] [ -e[c] ] [ -E[c] ] [ -k[c] ]
[ -m [ident][test baudrate]:type ] [ type ]
Description
tset causes terminal dependent processing such as setting
erase and kill characters, setting or resetting delays, and
the like. It is driven by the /etc/ttytype and /etc/termcap
files.
The type of terminal is specified by the type argument. The
type may be any type given in /etc/termcap. If type is not
specified, the terminal type is the value of the environment
variable TERM, unless the -h flag is set or any -m argument
is given. In this case, the type is read from /etc/ttytype
(the port name to terminal type database). The port name is
determined by a ttyname(S) call on the diagnostic output.
If the port is not found in /etc/ttytype the terminal type
is set to unknown.
Ports for which the terminal type is indeterminate are
identified in /etc/ttytype as dialup, plugboard, etc. The
user can specify how these identifiers should map to an
actual terminal type. The mapping flag, -m, is followed by
the appropriate identifier (a four-character or longer
substring is adequate), an optional test for baud rate, and
the terminal type to be used if the mapping conditions are
satisfied. If more than one mapping is specified, the first
correct mapping prevails. A missing identifier matches all
identifiers. Baud rates are specified as with stty(C), and
are compared with the speed of the diagnostic output. The
test may be any combination of: >, =, <, @, and !. (Note: @
is a synonym for = and ! inverts the sense of the test.
Remember that escape characters are meaningful to the
shell.)
If the type as determined above begins with a question mark,
the user is asked if he really wants that type. A null
response means to use that type; otherwise, another type can
be entered which will be used instead. (The question mark
must be escaped to prevent filename expansion by the shell.)
tset is most useful when included in the .login (for csh(C))
or .profile (for sh(C)) file executed automatically at
login, with -m mapping used to specify the terminal type you
most frequently dial in on.
Options
-e This option sets the erase character to the named
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character, c, with c defaulting to Ctrl-H.
-E This flag is identical to -e except that it only
operates on terminals that can backspace.
-k This option sets the kill character to the named
character, c, with c defaulting to Ctrl-U. In all of
these flags, ``^X'' where X is any character is
equivalent to Ctrl-X .
- This option prints the terminal type on the standard
output; this can be used to get the terminal type by
entering:
set termtype = `tset -`
If no other options are given, tset operates in ``fast
mode'' and only outputs the terminal type, bypassing
all other processing.
-h Forces tset to search /etc/ttytype for information and
to overlook the environment variable, TERM.
-s This option outputs ``setenv'' commands (if your
default shell is csh(C) or ``export'' and assignment
commands (if your default shell is sh(C));
For the -s option with the Bourne shell, enter:
tset -s ... > /tmp/tset$$
/tmp/tset$$
rm /tmp/tset$$
-S This option only outputs the strings to be placed in
the environment variables.
If you are using csh, enter:
set noglob
set term=(`tset -S ....`)
setenv TERM $term[1]
setenv TERMCAP "$term[2]"
unset term
unset noglob
-r This option displays the terminal type on the
diagnostic output.
-Q This option suppresses displaying the ``Erase set to''
and ``Kill set to'' messages.
-I This option suppresses outputting the terminal
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initialization strings.
-m This option is the mapping flag. It is used to specify
the terminal type you most frequently use. It is
followed by the appropriate identifier for your
terminal, listed in /etc/ttytype . When you log on the
system, it sets the terminal type to ident unless you
specify otherwise.
Examples
tset gt42
Sets the terminal type to gt42.
tset -mdialup\>300:adm3a -mdialup:dw2 -Qr -e#
If the entry in /etc/ttytype corresponding to the login
port is ``dialup'', and the port speed is greater than
300 baud, set the terminal type to adm3a. If the
/etc/ttytype entry is ``dialup'' and the port speed is
less than or equal to 300 baud, set the terminal type
to dw2. Set the erase character to ``#'', and display
the terminal type (but not the erase character) on
standard error.
tset -m dial:ti733 -m plug:\?hp2621 -m unknown:\? -e -k^U
If the /etc/ttytype entry begins with ``dial'', the
terminal type becomes ti733. If the entry begins with
``plug'', tset prompts with:
TERM = (hp2621)
Enter the correct terminal type if it is different than
that shown. If the entry is ``unknown'', tset prompts
with:
TERM = (unknown)
In any case erase is set to the terminal's backspace
character, and the terminal type is displayed on
standard error and the kill character is set to Ctrl-
U.
Files
/etc/ttytype Port name to terminal type map database
/etc/termcap Terminal capability database
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TSET(C) XENIX System V TSET(C)
See Also
tty(M), termcap(M), stty(C)
Credit
This utility was developed at the University of California
at Berkeley and is used with permission.
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