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<HTML><!--Distributed by F --><HEAD><TITLE>[Chapter 11] 11.5 My Favorite Is ^^ </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="1998-08-04T21:36:06Z"><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="ch11_01.htm"TITLE="11. The Lessons of History"><LINKREL="prev"HREF="ch11_04.htm"TITLE="11.4 My Favorite Is !:n* "><LINKREL="next"HREF="ch11_06.htm"TITLE="11.6 Using !$ for Safety with Wildcards "></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="ch11_04.htm"TITLE="11.4 My Favorite Is !:n* "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 11.4 My Favorite Is !:n* "BORDER="0"></A></TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><B><FONTFACE="ARIEL,HELVETICA,HELV,SANSERIF"SIZE="-1">Chapter 11<BR>The Lessons of History</FONT></B></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch11_06.htm"TITLE="11.6 Using !$ for Safety with Wildcards "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 11.6 Using !$ for Safety with Wildcards "BORDER="0"></A></TD></TR></TABLE> <HRALIGN="LEFT"WIDTH="515"TITLE="footer"></DIV><DIVCLASS="SECT1"><H2CLASS="sect1"><ACLASS="title"NAME="UPT-ART-7932">11.5 My Favorite Is ^^ </A></H2><PCLASS="para"><ACLASS="indexterm"NAME="AUTOID-12504"></A>Well, maybe it's not my favorite, but it's probably the history substitutionI use most often. It's especially handy if you have fumble-fingers on a strangekeyboard:</P><PCLASS="para"><BLOCKQUOTECLASS="screen"><PRECLASS="screen">% <CODECLASS="userinput"><B>cat myflie</B></CODE>cat: myflie: No such file or directory% <CODECLASS="userinput"><B>^li^il</B></CODE>cat myfile</PRE></BLOCKQUOTE></P><PCLASS="para">Obviously, this doesn't save much typing for a short command, but it can sure behandy with a long one.I also use <CODECLASS="literal">^^</CODE> with<SPANCLASS="link"><CODECLASS="literal">:p</CODE> (<ACLASS="linkend"HREF="ch11_10.htm"TITLE="Check Your History First with :p ">11.10</A>)</SPAN>to recall anearlier command so I can change it. For example:</P><PCLASS="para"><BLOCKQUOTECLASS="screen"><PRECLASS="screen">% <CODECLASS="userinput"><B>!m:p</B></CODE>more gobbledygook.c% <CODECLASS="userinput"><B>^k^k2</B></CODE>more gobbledygook2.c</PRE></BLOCKQUOTE></P><PCLASS="para">The point is sometimes not to save typing, but to save the effort ofremembering. For example, I want to print the file I looked at earlier, but don't remember the exact name...</P><PCLASS="para">[My keyboard can repeat characters when I'm not expecting it.I use a single <CODECLASS="literal">^</CODE> to delete extra characters.For example:</P><PCLASS="para"><BLOCKQUOTECLASS="screen"><PRECLASS="screen">% <CODECLASS="userinput"><B>lpr sources/aproggg.c</B></CODE>lpr: sources/aproggg.c: no such file or directory% <CODECLASS="userinput"><B>^gg</B></CODE>lpr sources/aprog.c</PRE></BLOCKQUOTE></P><PCLASS="para"> You could type <CODECLASS="literal">^gg^</CODE>, but the second caret isn't required.With a single caret, you don't type a replacement string - just thestring to delete. <EMCLASS="emphasis">-JP]</EM></P><DIVCLASS="sect1info"><PCLASS="SECT1INFO">- <SPANCLASS="authorinitials">TOR</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="ch11_04.htm"TITLE="11.4 My Favorite Is !:n* "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 11.4 My Favorite Is !:n* "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="ch11_06.htm"TITLE="11.6 Using !$ for Safety with Wildcards "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 11.6 Using !$ for Safety with Wildcards "BORDER="0"></A></TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172">11.4 My Favorite Is !:n* </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">11.6 Using !$ for Safety with Wildcards </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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