407 lines
11 KiB
Groff
407 lines
11 KiB
Groff
.\" Copyright (c) 1985, 1990, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)tset.1 8.1 (Berkeley) 6/9/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd June 9, 1993
|
|
.Dt TSET 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm tset ,
|
|
.Nm reset
|
|
.Nd terminal initialization
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl IQrSs
|
|
.Op Fl
|
|
.Op Fl e Ar ch
|
|
.Op Fl i Ar ch
|
|
.Op Fl k Ar ch
|
|
.Op Fl m Ar mapping
|
|
.Op Ar terminal
|
|
.Nm reset
|
|
.Op Fl IQrSs
|
|
.Op Fl
|
|
.Op Fl e Ar ch
|
|
.Op Fl i Ar ch
|
|
.Op Fl k Ar ch
|
|
.Op Fl m Ar mapping
|
|
.Op Ar terminal
|
|
.Sh DESCRIPTION
|
|
.Nm Tset
|
|
initializes terminals.
|
|
.Nm Tset
|
|
first determines the type of terminal that you are using.
|
|
This determination is done as follows, using the first terminal type found.
|
|
.Pp
|
|
.Bl -bullet -compact -offset indent
|
|
.It
|
|
The
|
|
.Ar terminal
|
|
argument specified on the command line.
|
|
.It
|
|
The value of the
|
|
.Ev TERM
|
|
environment variable.
|
|
.It
|
|
The terminal type associated with the standard error output device in the
|
|
.Pa /etc/ttys
|
|
file.
|
|
.It
|
|
The default terminal type, ``unknown''.
|
|
.El
|
|
.Pp
|
|
If the terminal type was not specified on the command-line, the
|
|
.Fl m
|
|
option mappings are then applied (see below for more information).
|
|
Then, if the terminal type begins with a question mark (``?''), the user is
|
|
prompted for confirmation of the terminal type.
|
|
An empty response confirms the type, or, another type can be entered to
|
|
specify a new type.
|
|
Once the terminal type has been determined, the termcap entry for the terminal
|
|
is retrieved.
|
|
If no termcap entry is found for the type, the user is prompted for another
|
|
terminal type.
|
|
.Pp
|
|
Once the termcap entry is retrieved, the window size, backspace, interrupt
|
|
and line kill characters (among many other things) are set and the terminal
|
|
and tab initialization strings are sent to the standard error output.
|
|
Finally, if the erase, interrupt and line kill characters have changed,
|
|
or are not set to their default values, their values are displayed to the
|
|
standard error output.
|
|
.Pp
|
|
When invoked as
|
|
.Nm reset ,
|
|
.Nm
|
|
sets cooked and echo modes, turns off cbreak and raw modes, turns on
|
|
newline translation and resets any unset special characters to their
|
|
default values before doing the terminal initialization described above.
|
|
This is useful after a program dies leaving a terminal in a abnormal state.
|
|
Note, you may have to type
|
|
.Dq Li <LF>reset<LF>
|
|
(the line-feed character is normally control-J) to get the terminal
|
|
to work, as carriage-return may no longer work in the abnormal state.
|
|
Also, the terminal will often not echo the command.
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width flag
|
|
.It Fl
|
|
The terminal type is displayed to the standard output, and the terminal is
|
|
not initialized in any way.
|
|
.It Fl e
|
|
Set the erase character to
|
|
.Ar ch .
|
|
.It Fl I
|
|
Do not send the terminal or tab initialization strings to the terminal.
|
|
.It Fl i
|
|
Set the interrupt character to
|
|
.Ar ch .
|
|
.It Fl k
|
|
Set the line kill character to
|
|
.Ar ch .
|
|
.It Fl m
|
|
Specify a mapping from a port type to a terminal.
|
|
See below for more information.
|
|
.It Fl Q
|
|
Don't display any values for the erase, interrupt and line kill characters.
|
|
.It Fl r
|
|
Print the terminal type to the standard error output.
|
|
.It Fl S
|
|
Print the terminal type and the termcap entry to the standard output.
|
|
See the section below on setting the environment for details.
|
|
.It Fl s
|
|
Print the sequence of shell commands to initialize the environment variables
|
|
.Ev TERM
|
|
and
|
|
.Ev TERMCAP
|
|
to the standard output.
|
|
See the section below on setting the environment for details.
|
|
.El
|
|
.Pp
|
|
The arguments for the
|
|
.Fl e ,
|
|
.Fl i
|
|
and
|
|
.Fl k
|
|
options may either be entered as actual characters or by using the
|
|
.Dq hat
|
|
notation, i.e. control-h may be specified as
|
|
.Dq Li ^H
|
|
or
|
|
.Dq Li ^h .
|
|
.Sh SETTING THE ENVIRONMENT
|
|
It is often desirable to enter the terminal type and information about
|
|
the terminal's capabilities into the shell's environment.
|
|
This is done using the
|
|
.Fl S
|
|
and
|
|
.Fl s
|
|
options.
|
|
.Pp
|
|
When the
|
|
.Fl S
|
|
option is specified, the terminal type and the termcap entry are written
|
|
to the standard output, separated by a space and without a terminating
|
|
newline.
|
|
This can be assigned to an array by
|
|
.Nm csh
|
|
and
|
|
.Nm ksh
|
|
users and then used like any other shell array.
|
|
.Pp
|
|
When the
|
|
.Fl s
|
|
option is specified, the commands to enter the information into the
|
|
shell's environment are written to the standard output.
|
|
If the
|
|
.Ev SHELL
|
|
environment variable ends in ``csh'', the commands are for the
|
|
.Nm csh ,
|
|
otherwise, they are for
|
|
.Xr sh .
|
|
Note, the
|
|
.Nm csh
|
|
commands set and unset the shell variable
|
|
.Dq noglob ,
|
|
leaving it unset.
|
|
The following line in the
|
|
.Pa .login
|
|
or
|
|
.Pa .profile
|
|
files will initialize the environment correctly:
|
|
.Bd -literal -offset indent
|
|
eval \`tset -s options ... \`
|
|
.Ed
|
|
.Pp
|
|
To demonstrate a simple use of the
|
|
.Fl S
|
|
option, the following lines in the
|
|
.Pa .login
|
|
file have an equivalent effect:
|
|
.Bd -literal -offset indent
|
|
set noglob
|
|
set term=(`tset -S options ...`)
|
|
setenv TERM $term[1]
|
|
setenv TERMCAP "$term[2]"
|
|
unset term
|
|
unset noglob
|
|
.Ed
|
|
.Sh TERMINAL TYPE MAPPING
|
|
When the terminal is not hardwired into the system (or the current system
|
|
information is incorrect) the terminal type derived from the
|
|
.Pa /etc/ttys
|
|
file or the
|
|
.Ev TERM
|
|
environment variable is often something generic like
|
|
.Dq network ,
|
|
.Dq dialup ,
|
|
or
|
|
.Dq unknown .
|
|
When
|
|
.Nm
|
|
is used in a startup script
|
|
.Pf ( Pa .profile
|
|
for
|
|
.Xr sh 1
|
|
users or
|
|
.Pa .login
|
|
for
|
|
.Xr csh 1
|
|
users) it is often desirable to provide information about the type of
|
|
terminal used on such ports.
|
|
The purpose of the
|
|
.Fl m
|
|
option is to
|
|
.Dq map
|
|
from some set of conditions to a terminal type, that is, to
|
|
tell
|
|
.Nm
|
|
``If I'm on this port at a particular speed, guess that I'm on that
|
|
kind of terminal''.
|
|
.Pp
|
|
The argument to the
|
|
.Fl m
|
|
option consists of an optional port type, an optional operator, an optional
|
|
baud rate specification, an optional colon (``:'') character and a terminal
|
|
type.
|
|
The port type is a string (delimited by either the operator or the colon
|
|
character).
|
|
The operator may be any combination of:
|
|
.Dq Li \&> ,
|
|
.Dq Li \&< ,
|
|
.Dq Li \&@ ,
|
|
and
|
|
.Dq Li \&! ;
|
|
.Dq Li \&>
|
|
means greater than,
|
|
.Dq Li \&<
|
|
means less than,
|
|
.Dq Li \&@
|
|
means equal to
|
|
and
|
|
.Dq Li !\&
|
|
inverts the sense of the test.
|
|
The baud rate is specified as a number and is compared with the speed
|
|
of the standard error output (which should be the control terminal).
|
|
The terminal type is a string.
|
|
.Pp
|
|
If the terminal type is not specified on the command line, the
|
|
.Fl m
|
|
mappings are applied to the terminal type.
|
|
If the port type and baud rate match the mapping, the terminal type specified
|
|
in the mapping replaces the current type.
|
|
If more than one mapping is specified, the first applicable mapping is used.
|
|
.Pp
|
|
For example, consider the following mapping:
|
|
.Dq Li dialup>9600:vt100 .
|
|
The port type is
|
|
.Dq Li dialup ,
|
|
the operator is
|
|
.Dq Li > ,
|
|
the baud rate specification is
|
|
.Dq Li 9600 ,
|
|
and the terminal type is
|
|
.Dq Li vt100 .
|
|
The result of this mapping is to specify that if the terminal type is
|
|
.Dq Li dialup ,
|
|
and the baud rate is greater than 9600 baud, a terminal type of
|
|
.Dq Li vt100
|
|
will be used.
|
|
.Pp
|
|
If no port type is specified, the terminal type will match any port type,
|
|
for example,
|
|
.Dq Li -m dialup:vt100 -m :?xterm
|
|
will cause any dialup port, regardless of baud rate, to match the terminal
|
|
type
|
|
.Dq Li vt100 ,
|
|
and any non-dialup port type to match the terminal type
|
|
.Dq Li ?xterm .
|
|
Note, because of the leading question mark, the user will be
|
|
queried on a default port as to whether they are actually using an
|
|
.Ar xterm
|
|
terminal.
|
|
.Pp
|
|
No whitespace characters are permitted in the
|
|
.Fl m
|
|
option argument.
|
|
Also, to avoid problems with metacharacters, it is suggested that the entire
|
|
.Fl m
|
|
option argument be placed within single quote characters, and that
|
|
.Nm csh
|
|
users insert a backslash character (``\e'') before any exclamation
|
|
marks (``!'').
|
|
.Sh ENVIRONMENT
|
|
The
|
|
.Nm
|
|
command utilizes the
|
|
.Ev SHELL
|
|
and
|
|
.Ev TERM
|
|
environment variables.
|
|
.Sh FILES
|
|
.Bl -tag -width /usr/share/misc/termcap -compact
|
|
.It Pa /etc/ttys
|
|
system port name to terminal type mapping database
|
|
.It Pa /usr/share/misc/termcap
|
|
terminal capability database
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr csh 1 ,
|
|
.Xr sh 1 ,
|
|
.Xr stty 1 ,
|
|
.Xr tty 4 ,
|
|
.Xr termcap 5 ,
|
|
.Xr ttys 5 ,
|
|
.Xr environ 7
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.Bx 3.0 .
|
|
.Sh COMPATIBILITY
|
|
The
|
|
.Fl A ,
|
|
.Fl E ,
|
|
.Fl h ,
|
|
.Fl u
|
|
and
|
|
.Fl v
|
|
options have been deleted from the
|
|
.Nm
|
|
utility.
|
|
None of them were documented in 4.3BSD and all are of limited utility at
|
|
best.
|
|
The
|
|
.Fl a ,
|
|
.Fl d
|
|
and
|
|
.Fl p
|
|
options are similarly not documented or useful, but were retained as they
|
|
appear to be in widespread use.
|
|
It is strongly recommended that any usage of these three options be
|
|
changed to use the
|
|
.Fl m
|
|
option instead.
|
|
The
|
|
.Fl n
|
|
option remains, but has no effect.
|
|
It is still permissible to specify the
|
|
.Fl e ,
|
|
.Fl i
|
|
and
|
|
.Fl k
|
|
options without arguments, although it is strongly recommended that such
|
|
usage be fixed to explicitly specify the character.
|
|
.Pp
|
|
Executing
|
|
.Nm
|
|
as
|
|
.Nm reset
|
|
no longer implies the
|
|
.Fl Q
|
|
option.
|
|
Also, the interaction between the
|
|
.Fl
|
|
option and the
|
|
.Ar terminal
|
|
argument in some historic implementations of
|
|
.Nm
|
|
has been removed.
|
|
.Pp
|
|
Finally, the
|
|
.Nm
|
|
implementation has been completely redone (as part of the addition to the
|
|
system of a
|
|
.St -p1003.1-88
|
|
compliant terminal interface) and will no longer compile on systems with
|
|
older terminal interfaces.
|