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<HTML><!--Distributed by F --><HEAD><TITLE>[Chapter 5] 5.9 Setting Your Erase, Kill, and Interrupt Characters </TITLE><METANAME="DC.title"CONTENT="UNIX Power Tools"><METANAME="DC.creator"CONTENT="Jerry Peek, Tim O'Reilly & Mike Loukides"><METANAME="DC.publisher"CONTENT="O'Reilly & Associates, Inc."><METANAME="DC.date"CONTENT="1998-08-04T21:33:10Z"><METANAME="DC.type"CONTENT="Text.Monograph"><METANAME="DC.format"CONTENT="text/html"SCHEME="MIME"><METANAME="DC.source"CONTENT="1-56592-260-3"SCHEME="ISBN"><METANAME="DC.language"CONTENT="en-US"><METANAME="generator"CONTENT="Jade 1.1/O'Reilly DocBook 3.0 to HTML 4.0"><LINKREV="made"HREF="mailto:online-books@oreilly.com"TITLE="Online Books Comments"><LINKREL="up"HREF="ch05_01.htm"TITLE="5. Setting Up Your Terminal"><LINKREL="prev"HREF="ch05_08.htm"TITLE="5.8 Terminal Escape Sequences "><LINKREL="next"HREF="ch05_10.htm"TITLE="5.10 Finding What Terminal Names You Can Use "></HEAD><BODYBGCOLOR="#FFFFFF"TEXT="#000000"><DIVCLASS="htmlnav"><H1><IMGSRC="gifs/smbanner.gif"ALT="UNIX Power Tools"USEMAP="#srchmap"BORDER="0"></H1><MAPNAME="srchmap"><AREASHAPE="RECT"COORDS="0,0,466,58"HREF="index.htm"ALT="UNIX Power Tools"><AREASHAPE="RECT"COORDS="467,0,514,18"HREF="jobjects/fsearch.htm"ALT="Search this book"></MAP><TABLEWIDTH="515"BORDER="0"CELLSPACING="0"CELLPADDING="0"><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch05_08.htm"TITLE="5.8 Terminal Escape Sequences "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 5.8 Terminal Escape Sequences "BORDER="0"></A></TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><B><FONTFACE="ARIEL,HELVETICA,HELV,SANSERIF"SIZE="-1">Chapter 5<BR>Setting Up Your Terminal</FONT></B></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch05_10.htm"TITLE="5.10 Finding What Terminal Names You Can Use "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 5.10 Finding What Terminal Names You Can Use "BORDER="0"></A></TD></TR></TABLE> <HRALIGN="LEFT"WIDTH="515"TITLE="footer"></DIV><DIVCLASS="SECT1"><H2CLASS="sect1"><ACLASS="title"NAME="UPT-ART-7735">5.9 Setting Your Erase, Kill, and Interrupt Characters </A></H2><PCLASS="para"><ACLASS="indexterm"NAME="AUTOID-5351"></A><ACLASS="indexterm"NAME="AUTOID-5353"></A>Have you ever sat down at a terminal where the "erase" key(the character that deletes the last thing you typed)wasn't where you thought it would be? If you have, you know howdisorienting this can be!<ACLASS="indexterm"NAME="AUTOID-5355"></A>The<SPANCLASS="link"><EMCLASS="emphasis">stty</EM> (<ACLASS="linkend"HREF="ch41_03.htm"TITLE="Find Out Terminal Settings with stty ">41.3</A>)</SPAN>command gives you a way ofchanging the erase character (along with several others) so you canrestore some order to your world.</P><PCLASS="para"><EMCLASS="emphasis">stty</EM> takes two kinds of input. If you want to give the commandinteractively, type <CODECLASS="literal">stty</CODE> <CODECLASS="literal">erase</CODE> <CODECLASS="replaceable"><I>char</I></CODE>, where<CODECLASS="replaceable"><I>char</I></CODE> is the key younormally use for erase - BACKSPACE, DELETE, whatever - followed byRETURN. This will do the trick, provided that the character youtype isn't already used for something. If the character is in use, or if you'reputting <EMCLASS="emphasis">stty</EM> commands into your <EMCLASS="emphasis">.login</EM> or <EMCLASS="emphasis">.profile</EM> file,<ACLASS="indexterm"NAME="AUTOID-5368"></A>it's betterto "spell these characters out." "Control" characters in<EMCLASS="emphasis">.login</EM> are allowed, but they aren't a great idea. If you liketo use the BACKSPACE key as the erase key, add the line below:</P><PCLASS="para"><BLOCKQUOTECLASS="screen"><PRECLASS="screen">stty erase ^h</PRE></BLOCKQUOTE></P><PCLASS="para">If you want to use the DELETE key, quote the <CODECLASS="literal">?</CODE> characterso the shell won't treat it as a<SPANCLASS="link">wildcard (<ACLASS="linkend"HREF="ch01_16.htm"TITLE="Wildcards ">1.16</A>)</SPAN>:</P><PCLASS="para"><BLOCKQUOTECLASS="screen"><PRECLASS="screen">stty erase ^\?</PRE></BLOCKQUOTE></P><PCLASS="para"><ACLASS="indexterm"NAME="AUTOID-5380"></A>That is: <EMCLASS="emphasis">stty</EM> lets you represent a control key with the two-charactercombination <CODECLASS="literal">^</CODE><CODECLASS="replaceable"><I>x</I></CODE>, where <CODECLASS="literal">^</CODE> is the literal key <CODECLASS="literal">^</CODE>(caret) and <CODECLASS="replaceable"><I>x</I></CODE> is any single character.<ACLASS="indexterm"NAME="AUTOID-5389"></A>You may need to put a <CODECLASS="literal">\</CODE> before the <CODECLASS="replaceable"><I>x</I></CODE> to prevent theshell from interpreting it as a wildcard [and a <CODECLASS="literal">\</CODE> before the<CODECLASS="literal">^</CODE> to prevent some Bourne shells from interpreting it as apipe!-<EMCLASS="emphasis">JP</EM> ].</P><PCLASS="para">Of course, you're not limited to the BACKSPACE or DELETEkeys; you can choose any other key you want. If you want to use "Z" asyour DELETE key, type <CODECLASS="literal">stty</CODE> <CODECLASS="literal">erase</CODE>\<CODECLASS="literal">Z</CODE>. Just make sure you never want to type a real <CODECLASS="literal">Z</CODE>! </P><PCLASS="para"><ACLASS="xref"HREF="ch05_09.htm#UPT-ART-7735-TAB-0"TITLE="Keys to Set with stty">Table 5.1</A>lists functions that <EMCLASS="emphasis">stty</EM> can change.<ACLASS="indexterm"NAME="AUTOID-5405"></A><ACLASS="indexterm"NAME="AUTOID-5407"></A><ACLASS="indexterm"NAME="AUTOID-5409"></A><ACLASS="indexterm"NAME="AUTOID-5411"></A><ACLASS="indexterm"NAME="AUTOID-5413"></A><ACLASS="indexterm"NAME="AUTOID-5415"></A></P><TABLECLASS="table"><CAPTIONCLASS="table"><ACLASS="title"NAME="UPT-ART-7735-TAB-0">Table 5.1: Keys to Set with stty</A></CAPTION><THEADCLASS="thead"><TRCLASS="row"VALIGN="TOP"><THCLASS="entry"ALIGN="LEFT"ROWSPAN="1"COLSPAN="1">Character</TH><THCLASS="entry"ALIGN="LEFT"ROWSPAN="1"COLSPAN="1">Function</TH><THCLASS="entry"ALIGN="LEFT"ROWSPAN="1"COLSPAN="1">Good Setting</TH><THCLASS="entry"ALIGN="LEFT"ROWSPAN="1"COLSPAN="1">See Article</TH></TR></THEAD><TBODYCLASS="tbody"><TRCLASS="row"VALIGN="TOP"><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">erase</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">Erases the previous character.</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">^\? (DELETE)</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1"><ACLASS="xref"HREF="ch05_09.htm"TITLE="Setting Your Erase, Kill, and Interrupt Characters ">5.9</A></TD></TR><TRCLASS="row"VALIGN="TOP"><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">kill</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">Erases the entire line.</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">^u (CTRL-u)</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1"><ACLASS="xref"HREF="ch09_02.htm"TITLE="Fix a Line Faster with Line-Kill and Word-Erase ">9.2</A></TD></TR><TRCLASS="row"VALIGN="TOP"><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">werase</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">Erases the previous word.</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">^w (CTRL-w)</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1"><ACLASS="xref"HREF="ch09_02.htm"TITLE="Fix a Line Faster with Line-Kill and Word-Erase ">9.2</A></TD></TR><TRCLASS="row"VALIGN="TOP"><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">intr</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">Terminates the current job.</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">^c (CTRL-c)</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1"><ACLASS="xref"HREF="ch38_09.htm"TITLE="Killing Foreground Jobs ">38.9</A></TD></TR><TRCLASS="row"VALIGN="TOP"><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">quit</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">Terminates the current job, makes a core file.</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">^\\ (CTRL-\)</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1"><ACLASS="xref"HREF="ch38_09.htm"TITLE="Killing Foreground Jobs ">38.9</A></TD></TR><TRCLASS="row"VALIGN="TOP"><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">susp</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">Stops the current job (so you can put it in the background).</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">^z (CTRL-z)</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1"><ACLASS="xref"HREF="ch12_01.htm#UPT-ART-0439"TITLE="Job Control: Work Faster, Stop Runaway Jobs ">12.1</A></TD></TR><TRCLASS="row"VALIGN="TOP"><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">rprnt</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">Redisplays the current line.</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1">^r (CTRL-r)</TD><TDCLASS="entry"ROWSPAN="1"COLSPAN="1"><ACLASS="xref"HREF="ch09_03.htm"TITLE="Reprinting Your Command Line with CTRL-r ">9.3</A></TD></TR></TBODY></TABLE><PCLASS="para"> The command <EMCLASS="emphasis">stty everything</EM> (for BSD UNIX) or <EMCLASS="emphasis">stty -a</EM> (forSystem V) shows all your current terminal settings.The <EMCLASS="emphasis">werase</EM>and <EMCLASS="emphasis">rprnt</EM> characters aren't implemented on many System V versions.</P><PCLASS="para">As a historical note: the erase character was originally <CODECLASS="literal">#</CODE>, and thekill character was originally <CODECLASS="literal">@</CODE>. These assignments go back to<SPANCLASS="link">the olden days (<ACLASS="linkend"HREF="ch41_02.htm"TITLE="stty and All That Stuff ">41.2</A>)</SPAN>,when terminals printed with real ink on real paperand made lots of noise. However, I'm told that there are some modernsystems on which these settings are still the default.</P><BLOCKQUOTECLASS="note"><PCLASS="para"><STRONG>NOTE:</STRONG> Terminal emulators, editors, and other programs can fool around withall of this stuff. They <EMCLASS="emphasis">should</EM> be well-behaved and reset yourterminal when you leave them, but that's often not true.So: don't expect your settings to work within a terminal emulator;they may, or they may not. And don't expect your settings to becorrect after you exit from your terminal emulator. Again, they may,or they may not.<ACLASS="indexterm"NAME="AUTOID-5481"></A>The <EMCLASS="emphasis">tset</EM> program also<SPANCLASS="link">fools around (<ACLASS="linkend"HREF="ch05_11.htm"TITLE="Initializing the Terminal with tset ">5.11</A>)</SPAN>with key settings.Therefore, in your<SPANCLASS="link">shell setup files (<ACLASS="linkend"HREF="ch02_02.htm"TITLE="Shell Setup Files-Which, Where, and Why ">2.2</A>)</SPAN>,put <EMCLASS="emphasis">stty</EM> after<EMCLASS="emphasis">tset</EM>.</P></BLOCKQUOTE><DIVCLASS="sect1info"><PCLASS="SECT1INFO">- <SPANCLASS="authorinitials">ML</SPAN></P></DIV></DIV><DIVCLASS="htmlnav"><P></P><HRALIGN="LEFT"WIDTH="515"TITLE="footer"><TABLEWIDTH="515"BORDER="0"CELLSPACING="0"CELLPADDING="0"><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch05_08.htm"TITLE="5.8 Terminal Escape Sequences "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 5.8 Terminal Escape Sequences "BORDER="0"></A></TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><ACLASS="book"HREF="index.htm"TITLE="UNIX Power Tools"><IMGSRC="gifs/txthome.gif"SRC="gifs/txthome.gif"ALT="UNIX Power Tools"BORDER="0"></A></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch05_10.htm"TITLE="5.10 Finding What Terminal Names You Can Use "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 5.10 Finding What Terminal Names You Can Use "BORDER="0"></A></TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172">5.8 Terminal Escape Sequences </TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><ACLASS="index"HREF="index/idx_0.htm"TITLE="Book Index"><IMGSRC="gifs/index.gif"SRC="gifs/index.gif"ALT="Book Index"BORDER="0"></A></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172">5.10 Finding What Terminal Names You Can Use </TD></TR></TABLE><HRALIGN="LEFT"WIDTH="515"TITLE="footer"><IMGSRC="gifs/smnavbar.gif"SRC="gifs/smnavbar.gif"USEMAP="#map"BORDER="0"ALT="The UNIX CD Bookshelf Navigation"><MAPNAME="map"><AREASHAPE="RECT"COORDS="0,0,73,21"HREF="../index.htm"ALT="The UNIX CD Bookshelf"><AREASHAPE="RECT"COORDS="74,0,163,21"HREF="index.htm"ALT="UNIX Power Tools"><AREASHAPE="RECT"COORDS="164,0,257,21"HREF="../unixnut/index.htm"ALT="UNIX in a Nutshell"><AREASHAPE="RECT"COORDS="258,0,321,21"HREF="../vi/index.htm"ALT="Learning the vi Editor"><AREASHAPE="RECT"COORDS="322,0,378,21"HREF="../sedawk/index.htm"ALT="sed & awk"><AREASHAPE="RECT"COORDS="379,0,438,21"HREF="../ksh/index.htm"ALT="Learning the Korn Shell"><AREASHAPE="RECT"COORDS="439,0,514,21"HREF="../lrnunix/index.htm"ALT="Learning the UNIX Operating System"></MAP></DIV></BODY></HTML>⌨️ 快捷键说明
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