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+ * @Id: tset.1,v 1.19 2006/12/24 15:00:30 tom Exp @
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+<HEAD>
+<TITLE>tset 1</TITLE>
+<link rev=made href="mailto:bug-ncurses@gnu.org">
+<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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+<BODY>
+<H1>tset 1</H1>
+<HR>
+<PRE>
+<!-- Manpage converted by man2html 3.0.1 -->
+<STRONG><A HREF="tset.1.html">tset(1)</A></STRONG> <STRONG><A HREF="tset.1.html">tset(1)</A></STRONG>
+
+
+
+
+</PRE>
+<H2>NAME</H2><PRE>
+ <STRONG>tset</STRONG>, <STRONG>reset</STRONG> - terminal initialization
+
+
+</PRE>
+<H2>SYNOPSIS</H2><PRE>
+ <STRONG>tset</STRONG> [<STRONG>-IQVcqrsw</STRONG>] [<STRONG>-</STRONG>] [<STRONG>-e</STRONG> <EM>ch</EM>] [<STRONG>-i</STRONG> <EM>ch</EM>] [<STRONG>-k</STRONG> <EM>ch</EM>] [<STRONG>-m</STRONG> <EM>mapping</EM>]
+ [<EM>terminal</EM>]
+ <STRONG>reset</STRONG> [<STRONG>-IQVcqrsw</STRONG>] [<STRONG>-</STRONG>] [<STRONG>-e</STRONG> <EM>ch</EM>] [<STRONG>-i</STRONG> <EM>ch</EM>] [<STRONG>-k</STRONG> <EM>ch</EM>] [<STRONG>-m</STRONG> <EM>mapping</EM>]
+ [<EM>terminal</EM>]
+
+
+</PRE>
+<H2>DESCRIPTION</H2><PRE>
+ <STRONG>Tset</STRONG> initializes terminals. <STRONG>Tset</STRONG> first determines the
+ type of terminal that you are using. This determination
+ is done as follows, using the first terminal type found.
+
+ 1. The <STRONG>terminal</STRONG> argument specified on the command line.
+
+ 2. The value of the <STRONG>TERM</STRONG> environmental variable.
+
+ 3. (BSD systems only.) The terminal type associated with
+ the standard error output device in the <EM>/etc/ttys</EM> file.
+ (On Linux and System-V-like UNIXes, <EM>getty</EM> does this job by
+ setting <STRONG>TERM</STRONG> according to the type passed to it by
+ <EM>/etc/inittab</EM>.)
+
+ 4. The default terminal type, ``unknown''.
+
+ If the terminal type was not specified on the command-
+ line, the <STRONG>-m</STRONG> option mappings are then applied (see the
+ section <STRONG>TERMINAL</STRONG> <STRONG>TYPE</STRONG> <STRONG>MAPPING</STRONG> for more information).
+ Then, if the terminal type begins with a question mark
+ (``?''), the user is prompted for confirmation of the ter-
+ minal 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 terminfo entry
+ for the terminal is retrieved. If no terminfo entry is
+ found for the type, the user is prompted for another ter-
+ minal type.
+
+ Once the terminfo entry is retrieved, the window size,
+ backspace, interrupt and line kill characters (among many
+ other things) are set and the terminal and tab initializa-
+ tion 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.
+ Use the <STRONG>-c</STRONG> or <STRONG>-w</STRONG> option to select only the window sizing
+ versus the other initialization. If neither option is
+ given, both are assumed.
+
+ When invoked as <STRONG>reset</STRONG>, <STRONG>tset</STRONG> sets cooked and echo modes,
+ turns off cbreak and raw modes, turns on newline transla-
+ tion 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 an abnormal state. Note, you may
+ have to type
+
+ <STRONG><LF>reset<LF></STRONG>
+
+ (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.
+
+ The options are as follows:
+
+ <STRONG>-c</STRONG> Set control characters and modes. <STRONG>-e</STRONG> Set the erase
+ character to <EM>ch</EM>.
+
+ <STRONG>-I</STRONG> Do not send the terminal or tab initialization
+ strings to the terminal.
+
+ <STRONG>-i</STRONG> Set the interrupt character to <EM>ch</EM>.
+
+ <STRONG>-k</STRONG> Set the line kill character to <EM>ch</EM>.
+
+ <STRONG>-m</STRONG> Specify a mapping from a port type to a terminal.
+ See the section <STRONG>TERMINAL</STRONG> <STRONG>TYPE</STRONG> <STRONG>MAPPING</STRONG> for more infor-
+ mation.
+
+ <STRONG>-Q</STRONG> Do not display any values for the erase, interrupt
+ and line kill characters. Normally <STRONG>tset</STRONG> displays the
+ values for control characters which differ from the
+ system's default values.
+
+ <STRONG>-q</STRONG> The terminal type is displayed to the standard out-
+ put, and the terminal is not initialized in any way.
+ The option `-' by itself is equivalent but archaic.
+
+ <STRONG>-r</STRONG> Print the terminal type to the standard error output.
+
+ <STRONG>-s</STRONG> Print the sequence of shell commands to initialize
+ the environment variable <STRONG>TERM</STRONG> to the standard output.
+ See the section <STRONG>SETTING</STRONG> <STRONG>THE</STRONG> <STRONG>ENVIRONMENT</STRONG> for details.
+
+ <STRONG>-V</STRONG> reports the version of ncurses which was used in this
+ program, and exits.
+
+ <STRONG>-w</STRONG> Resize the window to match the size deduced via
+ <STRONG>setupterm</STRONG>. Normally this has no effect, unless
+ <STRONG>setupterm</STRONG> is not able to detect the window size.
+
+ The arguments for the <STRONG>-e</STRONG>, <STRONG>-i</STRONG>, and <STRONG>-k</STRONG> options may either be
+ entered as actual characters or by using the `hat' nota-
+ tion, i.e. control-h may be specified as ``^H'' or ``^h''.
+
+
+</PRE>
+<H2>SETTING THE ENVIRONMENT</H2><PRE>
+ 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 <STRONG>-s</STRONG> option.
+
+ When the <STRONG>-s</STRONG> option is specified, the commands to enter the
+ information into the shell's environment are written to
+ the standard output. If the <STRONG>SHELL</STRONG> environmental variable
+ ends in ``csh'', the commands are for <STRONG>csh</STRONG>, otherwise, they
+ are for <STRONG>sh</STRONG>. Note, the <STRONG>csh</STRONG> commands set and unset the
+ shell variable <STRONG>noglob</STRONG>, leaving it unset. The following
+ line in the <STRONG>.login</STRONG> or <STRONG>.profile</STRONG> files will initialize the
+ environment correctly:
+
+ eval `tset -s options ... `
+
+
+</PRE>
+<H2>TERMINAL TYPE MAPPING</H2><PRE>
+ When the terminal is not hardwired into the system (or the
+ current system information is incorrect) the terminal type
+ derived from the <EM>/etc/ttys</EM> file or the <STRONG>TERM</STRONG> environmental
+ variable is often something generic like <STRONG>network</STRONG>, <STRONG>dialup</STRONG>,
+ or <STRONG>unknown</STRONG>. When <STRONG>tset</STRONG> is used in a startup script it is
+ often desirable to provide information about the type of
+ terminal used on such ports.
+
+ The purpose of the <STRONG>-m</STRONG> option is to map from some set of
+ conditions to a terminal type, that is, to tell <STRONG>tset</STRONG> ``If
+ I'm on this port at a particular speed, guess that I'm on
+ that kind of terminal''.
+
+ The argument to the <STRONG>-m</STRONG> option consists of an optional port
+ type, an optional operator, an optional baud rate specifi-
+ cation, 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 ``>'', ``<'', ``@'', and ``!''; ``>'' means
+ greater than, ``<'' means less than, ``@'' means equal to
+ and ``!'' 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.
+
+ If the terminal type is not specified on the command line,
+ the <STRONG>-m</STRONG> 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 applica-
+ ble mapping is used.
+
+ For example, consider the following mapping:
+ <STRONG>dialup>9600:vt100</STRONG>. The port type is dialup , the operator
+ is >, the baud rate specification is 9600, and the termi-
+ nal type is vt100. The result of this mapping is to spec-
+ ify that if the terminal type is <STRONG>dialup</STRONG>, and the baud rate
+ is greater than 9600 baud, a terminal type of <STRONG>vt100</STRONG> will
+ be used.
+
+ If no baud rate is specified, the terminal type will match
+ any baud rate. If no port type is specified, the terminal
+ type will match any port type. For example, <STRONG>-m</STRONG>
+ <STRONG>dialup:vt100</STRONG> <STRONG>-m</STRONG> <STRONG>:?xterm</STRONG> will cause any dialup port,
+ regardless of baud rate, to match the terminal type vt100,
+ and any non-dialup port type to match the terminal type
+ ?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 xterm terminal.
+
+ No whitespace characters are permitted in the <STRONG>-m</STRONG> option
+ argument. Also, to avoid problems with meta-characters,
+ it is suggested that the entire <STRONG>-m</STRONG> option argument be
+ placed within single quote characters, and that <STRONG>csh</STRONG> users
+ insert a backslash character (``\'') before any exclama-
+ tion marks (``!'').
+
+
+</PRE>
+<H2>HISTORY</H2><PRE>
+ The <STRONG>tset</STRONG> command appeared in BSD 3.0. The <STRONG>ncurses</STRONG> imple-
+ mentation was lightly adapted from the 4.4BSD sources for
+ a terminfo environment by Eric S. Raymond <esr@snark.thyr-
+ sus.com>.
+
+
+</PRE>
+<H2>COMPATIBILITY</H2><PRE>
+ The <STRONG>tset</STRONG> utility has been provided for backward-compati-
+ bility with BSD environments (under most modern UNIXes,
+ <STRONG>/etc/inittab</STRONG> and <STRONG><A HREF="getty.1.html">getty(1)</A></STRONG> can set <STRONG>TERM</STRONG> appropriately for
+ each dial-up line; this obviates what was <STRONG>tset</STRONG>'s most
+ important use). This implementation behaves like 4.4BSD
+ tset, with a few exceptions specified here.
+
+ The <STRONG>-S</STRONG> option of BSD tset no longer works; it prints an
+ error message to stderr and dies. The <STRONG>-s</STRONG> option only sets
+ <STRONG>TERM</STRONG>, not <STRONG>TERMCAP</STRONG>. Both these changes are because the
+ <STRONG>TERMCAP</STRONG> variable is no longer supported under terminfo-
+ based <STRONG>ncurses</STRONG>, which makes <STRONG>tset</STRONG> <STRONG>-S</STRONG> useless (we made it die
+ noisily rather than silently induce lossage).
+
+ There was an undocumented 4.4BSD feature that invoking
+ tset via a link named `TSET` (or via any other name begin-
+ ning with an upper-case letter) set the terminal to use
+ upper-case only. This feature has been omitted.
+
+ The <STRONG>-A</STRONG>, <STRONG>-E</STRONG>, <STRONG>-h</STRONG>, <STRONG>-u</STRONG> and <STRONG>-v</STRONG> options were deleted from the
+ <STRONG>tset</STRONG> utility in 4.4BSD. None of them were documented in
+ 4.3BSD and all are of limited utility at best. The <STRONG>-a</STRONG>,
+ <STRONG>-d</STRONG>, and <STRONG>-p</STRONG> 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 <STRONG>-m</STRONG> option instead. The -n
+ option remains, but has no effect. The <STRONG>-adnp</STRONG> options are
+ therefore omitted from the usage summary above.
+
+ It is still permissible to specify the <STRONG>-e</STRONG>, <STRONG>-i</STRONG>, and <STRONG>-k</STRONG>
+ options without arguments, although it is strongly recom-
+ mended that such usage be fixed to explicitly specify the
+ character.
+
+ As of 4.4BSD, executing <STRONG>tset</STRONG> as <STRONG>reset</STRONG> no longer implies
+ the <STRONG>-Q</STRONG> option. Also, the interaction between the - option
+ and the <EM>terminal</EM> argument in some historic implementations
+ of <STRONG>tset</STRONG> has been removed.
+
+
+</PRE>
+<H2>ENVIRONMENT</H2><PRE>
+ The <STRONG>tset</STRONG> command uses these environment variables:
+
+ SHELL
+ tells <STRONG>tset</STRONG> whether to initialize <STRONG>TERM</STRONG> using <STRONG>sh</STRONG> or <STRONG>csh</STRONG>
+ syntax.
+
+ TERM Denotes your terminal type. Each terminal type is
+ distinct, though many are similar.
+
+ TERMCAP
+ may denote the location of a termcap database. If it
+ is not an absolute pathname, e.g., begins with a `/',
+ <STRONG>tset</STRONG> removes the variable from the environment before
+ looking for the terminal description.
+
+
+</PRE>
+<H2>FILES</H2><PRE>
+ /etc/ttys
+ system port name to terminal type mapping database
+ (BSD versions only).
+
+ /usr/share/terminfo
+ terminal capability database
+
+
+</PRE>
+<H2>SEE ALSO</H2><PRE>
+ <STRONG><A HREF="csh.1.html">csh(1)</A></STRONG>, <STRONG><A HREF="sh.1.html">sh(1)</A></STRONG>, <STRONG><A HREF="stty.1.html">stty(1)</A></STRONG>, <STRONG><A HREF="curs_terminfo.3x.html">curs_terminfo(3x)</A></STRONG>, <STRONG><A HREF="tty.4.html">tty(4)</A></STRONG>, ter-
+ <STRONG><A HREF="minfo.5.html">minfo(5)</A></STRONG>, <STRONG><A HREF="ttys.5.html">ttys(5)</A></STRONG>, <STRONG><A HREF="environ.7.html">environ(7)</A></STRONG>
+
+ This describes <STRONG>ncurses</STRONG> version 5.6 (patch 20081011).
+
+
+
+ <STRONG><A HREF="tset.1.html">tset(1)</A></STRONG>
+</PRE>
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