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<HTML><!--Distributed by F --><HEAD><TITLE>[Chapter 30] 30.8 Get Back What You Deleted with Numbered Buffers</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="1998-08-04T21:45:23Z"><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="ch30_01.htm"TITLE="30. vi Tips and Tricks"><LINKREL="prev"HREF="ch30_07.htm"TITLE="30.7 Using Buffers to Move or Copy Text "><LINKREL="next"HREF="ch30_09.htm"TITLE="30.9 Using Search Patterns and Global Commands"></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="ch30_07.htm"TITLE="30.7 Using Buffers to Move or Copy Text "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 30.7 Using Buffers to Move or Copy Text "BORDER="0"></A></TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><B><FONTFACE="ARIEL,HELVETICA,HELV,SANSERIF"SIZE="-1">Chapter 30<BR>vi Tips and Tricks</FONT></B></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch30_09.htm"TITLE="30.9 Using Search Patterns and Global Commands"><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 30.9 Using Search Patterns and Global Commands"BORDER="0"></A></TD></TR></TABLE> <HRALIGN="LEFT"WIDTH="515"TITLE="footer"></DIV><DIVCLASS="SECT1"><H2CLASS="sect1"><ACLASS="title"NAME="UPT-ART-6161">30.8 Get Back What You Deleted with Numbered Buffers</A></H2><PCLASS="para"><ACLASS="indexterm"NAME="AUTOID-32906"></A><ACLASS="indexterm"NAME="AUTOID-32909"></A><ACLASS="indexterm"NAME="AUTOID-32911"></A><ACLASS="indexterm"NAME="AUTOID-32914"></A>Being able to delete large blocks of text at a single bound isall very well and good, but what if you mistakenly delete 53 linesthat you need?<ACLASS="indexterm"NAME="AUTOID-32917"></A><ACLASS="indexterm"NAME="AUTOID-32920"></A>There's a way to recover any of your past <EMCLASS="emphasis">nine</EM> deletions, becausethey're saved in numbered buffers.The last delete is saved in buffer 1, the second-to-last in buffer 2,and so on.</P><PCLASS="para">To recover a deletion, type <CODECLASS="literal"><"></CODE> (the double quote character),identify thebuffered text by number, then give the <EMCLASS="emphasis">put</EM> command.To recover your second-to-last deletion from buffer 2, type:</P><PCLASS="para"><BLOCKQUOTECLASS="screen"><PRECLASS="screen">"2p</PRE></BLOCKQUOTE></P><PCLASS="para">The deletion in buffer 2 is placed on the line below the cursor.</P><PCLASS="para">If you're not sure which buffer contains the deletion you want torestore, you don't have to keep typing <CODECLASS="literal"><"></CODE><EMCLASS="emphasis">n</EM><CODECLASS="literal">p</CODE> overand over again.If you use the <EMCLASS="emphasis">repeat</EM> command (<CODECLASS="literal">.</CODE>) with <CODECLASS="literal">p</CODE> after <CODECLASS="literal">u</CODE>(undo), it automatically increments the buffer number.As a result, you can search through the numbered buffers as follows:</P><PCLASS="para"><BLOCKQUOTECLASS="screen"><PRECLASS="screen">"1pu.u.u <EMCLASS="emphasis">etc.</EM></PRE></BLOCKQUOTE></P><PCLASS="para">to put the contents of each succeeding buffer in the fileone after the other.Each time you type <CODECLASS="literal">u</CODE>, the restored text is removed; whenyou type a dot (.), the contents of the <EMCLASS="emphasis">next</EM> buffer is restored toyour file.Keep typing <CODECLASS="literal">u</CODE> and . until you've recovered the textyou're looking for.</P><DIVCLASS="sect1info"><PCLASS="SECT1INFO">- <SPANCLASS="authorinitials">TOR</SPAN> <SPANCLASS="bibliomisc">from O'Reilly & Associates' <CITECLASS="citetitle">Learning the vi Editor</CITE>, Chapter 4</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="ch30_07.htm"TITLE="30.7 Using Buffers to Move or Copy Text "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 30.7 Using Buffers to Move or Copy Text "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="ch30_09.htm"TITLE="30.9 Using Search Patterns and Global Commands"><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 30.9 Using Search Patterns and Global Commands"BORDER="0"></A></TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172">30.7 Using Buffers to Move or Copy Text </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">30.9 Using Search Patterns and Global Commands</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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