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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><HTML><HEAD><TITLE>Terminal Control Commands</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="Advanced Bash-Scripting Guide"HREF="index.html"><LINKREL="UP"TITLE="External Filters, Programs and Commands"HREF="external.html"><LINKREL="PREVIOUS"TITLE="Communications Commands"HREF="communications.html"><LINKREL="NEXT"TITLE="Math Commands"HREF="mathc.html"><METAHTTP-EQUIV="Content-Style-Type"CONTENT="text/css"><LINKREL="stylesheet"HREF="common/kde-common.css"TYPE="text/css"><METAHTTP-EQUIV="Content-Type"CONTENT="text/html; charset=iso-8859-1"><METAHTTP-EQUIV="Content-Language"CONTENT="en"><LINKREL="stylesheet"HREF="common/kde-localised.css"TYPE="text/css"TITLE="KDE-English"><LINKREL="stylesheet"HREF="common/kde-default.css"TYPE="text/css"TITLE="KDE-Default"></HEAD><BODYCLASS="SECT1"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#AA0000"VLINK="#AA0055"ALINK="#AA0000"STYLE="font-family: sans-serif;"><DIVCLASS="NAVHEADER"><TABLESUMMARY="Header navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">Advanced Bash-Scripting Guide: An in-depth exploration of the art of shell scripting</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="communications.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Chapter 15. External Filters, Programs and Commands</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="mathc.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="TERMINALCCMDS"></A>15.7. Terminal Control Commands</H1><DIVCLASS="VARIABLELIST"><P><B><ANAME="TERMCOMMANDLISTING1"></A>Command affecting the console or terminal</B></P><DL><DT><ANAME="TPUTREF"></A><BCLASS="COMMAND">tput</B></DT><DD><P>Initialize terminal and/or fetch information about it from <TTCLASS="FILENAME">terminfo</TT> data. Various options permit certain terminal operations. <BCLASS="COMMAND">tput clear</B> is the equivalent of <BCLASS="COMMAND">clear</B>, below. <BCLASS="COMMAND">tput reset</B> is the equivalent of <AHREF="terminalccmds.html#RESETREF">reset</A>, below. <BCLASS="COMMAND">tput sgr0</B> also resets the terminal, but without clearing the screen.</P><P> <TABLEBORDER="0"BGCOLOR="#E0E0E0"WIDTH="90%"><TR><TD><PRECLASS="SCREEN"> <TTCLASS="PROMPT">bash$ </TT><TTCLASS="USERINPUT"><B>tput longname</B></TT> <TTCLASS="COMPUTEROUTPUT">xterm terminal emulator (XFree86 4.0 Window System)</TT> </PRE></TD></TR></TABLE> </P><P>Issuing a <BCLASS="COMMAND">tput cup X Y</B> moves the cursor to the (X,Y) coordinates in the current terminal. A <BCLASS="COMMAND">clear</B> to erase the terminal screen would normally precede this.</P><P>Note that <AHREF="system.html#STTYREF">stty</A> offers a more powerful command set for controlling a terminal.</P></DD><DT><ANAME="INFOCMPREF"></A><BCLASS="COMMAND">infocmp</B></DT><DD><P>This command prints out extensive information about the current terminal. It references the <ICLASS="FIRSTTERM">terminfo</I> database.</P><P> <TABLEBORDER="0"BGCOLOR="#E0E0E0"WIDTH="90%"><TR><TD><PRECLASS="SCREEN"> <TTCLASS="PROMPT">bash$ </TT><TTCLASS="USERINPUT"><B>infocmp</B></TT> <TTCLASS="COMPUTEROUTPUT"># Reconstructed via infocmp from file: /usr/share/terminfo/r/rxvt rxvt|rxvt terminal emulator (X Window System), am, bce, eo, km, mir, msgr, xenl, xon, colors#8, cols#80, it#8, lines#24, pairs#64, acsc=``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~, bel=^G, blink=\E[5m, bold=\E[1m, civis=\E[?25l, clear=\E[H\E[2J, cnorm=\E[?25h, cr=^M, ...</TT> </PRE></TD></TR></TABLE> </P></DD><DT><ANAME="RESETREF"></A><BCLASS="COMMAND">reset</B></DT><DD><P>Reset terminal parameters and clear text screen. As with <BCLASS="COMMAND">clear</B>, the cursor and prompt reappear in the upper lefthand corner of the terminal.</P></DD><DT><ANAME="CLEARREF"></A><BCLASS="COMMAND">clear</B></DT><DD><P>The <BCLASS="COMMAND">clear</B> command simply clears the text screen at the console or in an <ICLASS="FIRSTTERM">xterm</I>. The prompt and cursor reappear at the upper lefthand corner of the screen or xterm window. This command may be used either at the command line or in a script. See <AHREF="testbranch.html#EX30">Example 10-25</A>.</P></DD><DT><ANAME="SCRIPTREF"></A><BCLASS="COMMAND">script</B></DT><DD><P>This utility records (saves to a file) all the user keystrokes at the command line in a console or an xterm window. This, in effect, creates a record of a session.</P></DD></DL></DIV></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLESUMMARY="Footer navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="communications.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="index.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="mathc.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Communications Commands</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="external.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Math Commands</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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