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| <TITLE>tset 1</TITLE> |
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| <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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