📄 tput.html

📁 unix 下的C开发手册,还用详细的例程。
💻 HTML
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>tput</title></head><body bgcolor=white><center><font size=2>The Single UNIX &reg; Specification, Version 2<br>Copyright &copy; 1997 The Open Group</font></center><hr size=2 noshade><h4><a name = "tag_001_014_2315">&nbsp;</a>NAME</h4><blockquote>tput - change terminal characteristics</blockquote><h4><a name = "tag_001_014_2316">&nbsp;</a>SYNOPSIS</h4><blockquote><pre><code>tput <b>[</b>-T <i>type</i><b>] </b><i>operand</i>...</code></pre></blockquote><h4><a name = "tag_001_014_2317">&nbsp;</a>DESCRIPTION</h4><blockquote>The<i>tput</i>utility displays terminal-dependent information.The manner in which this information is retrieved is unspecified.The information displayed will clear the terminal screen,initialise the user's terminal or reset the user's terminal,depending on the operand given.The exact consequences of displaying this information are unspecified.</blockquote><h4><a name = "tag_001_014_2318">&nbsp;</a>OPTIONS</h4><blockquote>The<i>tput</i>utility supports the <b>XBD</b> specification, <a href="../xbd/utilconv.html#usg"><b>Utility Syntax Guidelines</b>&nbsp;</a> .<p>The following option is supported:<dl compact><dt><b>-T&nbsp;</b><i>type</i><dd>Indicate the type of terminal.If this option is not supplied and the<i>TERM</i>variable is unset or null,an unspecified default terminal type will be used.The setting of<i>type</i>will take precedence over the value in<i>TERM .</i></dl></blockquote><h4><a name = "tag_001_014_2319">&nbsp;</a>OPERANDS</h4><blockquote>The following strings will be supported as operands by the implementationin the POSIX locale:<dl compact><dt><b>clear</b><dd>Display the clear-screen sequence.<dt><b>init</b><dd>Display the sequence that will initialisethe user's terminal in an implementation-dependent manner.<dt><b>reset</b><dd>Display the sequence that will resetthe user's terminal in an implementation-dependent manner.</dl><p>If a terminal does not support any of the operationsdescribed by these operands, this will not be consideredan error condition.</blockquote><h4><a name = "tag_001_014_2320">&nbsp;</a>STDIN</h4><blockquote>Not used.</blockquote><h4><a name = "tag_001_014_2321">&nbsp;</a>INPUT FILES</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_2322">&nbsp;</a>ENVIRONMENT VARIABLES</h4><blockquote>The following environment variables affect the execution of<i>tput</i>:<dl compact><dt><i>LANG</i><dd>Provide a default value for the internationalisation variablesthat are unset or null.If<i>LANG</i>is unset or null, the corresponding value from theimplementation-dependent default locale will be used.If any of the internationalisation variables contains an invalid setting, theutility will behave as if none of the variables had been defined.<dt><i>LC_ALL</i><dd>If set to a non-empty string value,override the values of all the other internationalisation variables.<dt><i>LC_CTYPE</i><dd>Determine thelocale for the interpretation of sequences of bytes of text data ascharacters (for example, single- as opposed to multi-byte charactersin arguments).<dt><i>LC_MESSAGES</i><dd>Determine the locale that should be used to affectthe format and contents of diagnosticmessages written to standard error.<dt><i>NLSPATH</i><dd>Determine the location of message cataloguesfor the processing of<i>LC_MESSAGES .</i><dt><i>TERM</i><dd>Determine the terminal type.If this variable isunset or null,and if the<b>-T</b>option is not specified, an unspecified defaultterminal type will be used.</dl></blockquote><h4><a name = "tag_001_014_2323">&nbsp;</a>ASYNCHRONOUS EVENTS</h4><blockquote>Default.</blockquote><h4><a name = "tag_001_014_2324">&nbsp;</a>STDOUT</h4><blockquote>If standard output is a terminal device,it may be used for writingthe appropriate sequence to clear the screen or reset or initialisethe terminal.If standard output is not a terminal device,undefined results occur.</blockquote><h4><a name = "tag_001_014_2325">&nbsp;</a>STDERR</h4><blockquote>Used only for diagnostic messages.</blockquote><h4><a name = "tag_001_014_2326">&nbsp;</a>OUTPUT FILES</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_2327">&nbsp;</a>EXTENDED DESCRIPTION</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_2328">&nbsp;</a>EXIT STATUS</h4><blockquote>The following exit values are returned:<dl compact><dt>0<dd>The requested string was written successfully.<dt>1<dd>Unspecified.<dt>2<dd>Usage error.<dt>3<dd>No information is available about the specified terminal type.<dt>4<dd>The specified operand is invalid.<dt>&gt;4<dd>An error occurred.</dl></blockquote><h4><a name = "tag_001_014_2329">&nbsp;</a>CONSEQUENCES OF ERRORS</h4><blockquote>If one of the operands is not available for the terminal,<i>tput</i>continues processing the remaining operands.</blockquote><h4><a name = "tag_001_014_2330">&nbsp;</a>APPLICATION USAGE</h4><blockquote>The difference between resetting and initialising a terminalis left unspecified, as they vary greatly based on hardware types.In general, resetting is a more severe action.<p>Some terminals use control characters to perform thestated functions, and on such terminals it might makesense to use<i>tput</i>to store the initialisation strings in a fileor environment variable for later use.However, because other terminals might rely onsystem calls to do this work, the standard outputcannot be used in a portable manner,such as the following non-portable constructs:<pre><code>ClearVar=`tput clear`tput reset | mailx -s "Wake Up" ddg</code></pre></blockquote><h4><a name = "tag_001_014_2331">&nbsp;</a>EXAMPLES</h4><blockquote><ol><p><li>Initialise the terminal according to the type of terminalin the environmental variable<i>TERM</i>.This command can be included in a<b>.profile</b>file.<pre><code>tput init</code></pre><p><li>Reset a 450 terminal.<pre><code>tput -T 450 reset</code></pre><p></ol></blockquote><h4><a name = "tag_001_014_2332">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_2333">&nbsp;</a>SEE ALSO</h4><blockquote><i><a href="stty.html">stty</a></i>,<i><a href="tabs.html">tabs</a></i>.</blockquote><hr size=2 noshade><center><font size=2>UNIX &reg; is a registered Trademark of The Open Group.<br>Copyright &copy; 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -