📄 ch30_16.htm
字号:
<HTML><!--Distributed by F --><HEAD><TITLE>[Chapter 30] 30.16 Counting Occurrences; Stopping Search Wraps </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="1998-08-04T21:45:29Z"><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_15.htm"TITLE="30.15 Useful Global Commands (with Pattern Matches) "><LINKREL="next"HREF="ch30_17.htm"TITLE="30.17 Capitalizing Every Word on a Line "></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_15.htm"TITLE="30.15 Useful Global Commands (with Pattern Matches) "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 30.15 Useful Global Commands (with Pattern Matches) "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_17.htm"TITLE="30.17 Capitalizing Every Word on a Line "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 30.17 Capitalizing Every Word on a Line "BORDER="0"></A></TD></TR></TABLE> <HRALIGN="LEFT"WIDTH="515"TITLE="footer"></DIV><DIVCLASS="SECT1"><H2CLASS="sect1"><ACLASS="title"NAME="UPT-ART-2790">30.16 Counting Occurrences; Stopping Search Wraps </A></H2><PCLASS="para">Want to see how many times you used the word <EMCLASS="emphasis">very</EM> in a file?There are a couple of easy ways.</P><PCLASS="para"><ACLASS="indexterm"NAME="AUTOID-33452"></A><ACLASS="indexterm"NAME="AUTOID-33455"></A><ACLASS="indexterm"NAME="AUTOID-33458"></A><ACLASS="indexterm"NAME="AUTOID-33461"></A><ACLASS="indexterm"NAME="AUTOID-33464"></A>First, tell <EMCLASS="emphasis">vi</EM> to stop searching when you get to the end of the file.Type the command <CODECLASS="literal">:set nowrapscan</CODE> or put it in your<SPANCLASS="link"><EMCLASS="emphasis">.exrc</EM> file (<ACLASS="linkend"HREF="ch04_09.htm"TITLE="Setting Up vi with the .exrc File ">4.9</A>)</SPAN>.</P><OLCLASS="orderedlist"><LICLASS="listitem"><PCLASS="para">Move to the top of the file with the <CODECLASS="literal">1G</CODE> command.Search for the first <EMCLASS="emphasis">very</EM> with the command <CODECLASS="literal">/very</CODE>(HINT: using the<SPANCLASS="link">word-limiting regular expression <CODECLASS="literal">/\<very\></CODE> (<ACLASS="linkend"HREF="ch26_04.htm"TITLE="Using Metacharacters in Regular Expressions ">26.4</A>)</SPAN>instead will keep you from matching words like <EMCLASS="emphasis">every</EM>).To find the next <EMCLASS="emphasis">very</EM>, type the <CODECLASS="literal">n</CODE> (next) command.</P><PCLASS="para">When <EMCLASS="emphasis">vi</EM> says <CODECLASS="literal">Address</CODE> <CODECLASS="literal">search</CODE> <CODECLASS="literal">hit</CODE> <CODECLASS="literal">BOTTOM</CODE><CODECLASS="literal">without</CODE> <CODECLASS="literal">matching</CODE> <CODECLASS="literal">pattern</CODE>, you've found all ofthe words.</P></LI><LICLASS="listitem"><PCLASS="para">Use the command:</P><PCLASS="para"><BLOCKQUOTECLASS="screen"><PRECLASS="screen"><CODECLASS="userinput"><B>:g/very/p</B></CODE></PRE></BLOCKQUOTE></P><PCLASS="para">The matching lines will scroll down your screen.</P></LI></OL><PCLASS="para">To find the line numbers, too, type <CODECLASS="literal">:set</CODE> <CODECLASS="literal">number</CODE> beforeyour searches.</P><DIVCLASS="sect1info"><PCLASS="SECT1INFO">- <SPANCLASS="authorinitials">JP</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_15.htm"TITLE="30.15 Useful Global Commands (with Pattern Matches) "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 30.15 Useful Global Commands (with Pattern Matches) "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_17.htm"TITLE="30.17 Capitalizing Every Word on a Line "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 30.17 Capitalizing Every Word on a Line "BORDER="0"></A></TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172">30.15 Useful Global Commands (with Pattern Matches) </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">30.17 Capitalizing Every Word on a Line </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
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 + -