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<HTML><!--Distributed by F --><HEAD><TITLE>[Part IV] Looking Inside Files </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="1998-08-04T21:41:52Z"><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="index.htm"TITLE="UNIX Power Tools"><LINKREL="prev"HREF="ch24_18.htm"TITLE="24.18 Huge Files Might Not Take a Lot of Disk Space "><LINKREL="next"HREF="ch25_01.htm"TITLE="25. Showing What's in a File"></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="ch24_18.htm"TITLE="24.18 Huge Files Might Not Take a Lot of Disk Space "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 24.18 Huge Files Might Not Take a Lot of Disk Space "BORDER="0"></A></TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><B><FONTFACE="ARIEL,HELVETICA,HELV,SANSERIF"SIZE="-1">Part IV</FONT></B></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172"><ACLASS="CHAPTER"HREF="ch25_01.htm"TITLE="25. Showing What's in a File"><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 25. Showing What's in a File"BORDER="0"></A></TD></TR></TABLE> <HRALIGN="LEFT"WIDTH="515"TITLE="footer"></DIV><DIVCLASS="PART"><H1CLASS="part"><ACLASS="title"NAME="UPT-PART-4">Part IV: Looking Inside Files </A></H1><DIVCLASS="partintro"><PCLASS="para">It's amazing how much there is to know about files without everopening them. But all the cataloging andorganizing and finding of files is simply a prelude to using them-andthat usually means dealing with what's inside.</P><PCLASS="para"><ACLASS="xref"HREF="ch25_01.htm"TITLE="Showing What's in a File">Chapter 25, Showing What's in a File</A> talks about various ways to dump the entire contents of afile to your screen-all at once, or in manageable pieces. </P><PCLASS="para"><ACLASS="xref"HREF="ch26_01.htm"TITLE="Regular Expressions (Pattern Matching)">Chapter 26, Regular Expressions (Pattern Matching)</A> describes the essential prelude to any more precise lookat just parts of a file-the regular expressions that allow you tomatch textual patterns rather than fixed words or phrases.</P><PCLASS="para"><ACLASS="xref"HREF="ch27_01.htm"TITLE="Searching Through Files">Chapter 27, Searching Through Files</A> describes the <EMCLASS="emphasis">grep</EM> family of programs, which useregular expressions to find and print individual matching lines froma file or files. <EMCLASS="emphasis">grep</EM> is the program that people ignorant ofUNIX like to pick on for its seemingly obscure name, yet it is one ofthe handiest tools UNIX provides.</P><PCLASS="para"><ACLASS="xref"HREF="ch28_01.htm"TITLE="Comparing Files">Chapter 28, Comparing Files</A> tells how to compare two files that might have a greatdeal in common, how to isolate the differences, and how to put Humptyback together again when versions have become skewed with multipleincompatible edits.</P><PCLASS="para"><ACLASS="xref"HREF="ch29_01.htm"TITLE="Spell Checking, Word Counting, and Textual Analysis">Chapter 29, Spell Checking, Word Counting, and Textual Analysis</A> describes some specialized ways to look at files-spellchecking, word counting, and various kinds of simple proofreading.</P></DIV><DIVCLASS="docinfo"><PCLASS="DOCINFO">- <SPANCLASS="authorinitials">TOR</SPAN></P></DIV><PCLASS="part-toc"><ACLASS="chapter"HREF="ch25_01.htm"TITLE="25. Showing What's in a File">Chapter 25: <CITECLASS="chapter">Showing What's in a File</CITE></A><BR><ACLASS="chapter"HREF="ch26_01.htm"TITLE="26. Regular Expressions (Pattern Matching)">Chapter 26: <CITECLASS="chapter">Regular Expressions (Pattern Matching)</CITE></A><BR><ACLASS="chapter"HREF="ch27_01.htm"TITLE="27. Searching Through Files">Chapter 27: <CITECLASS="chapter">Searching Through Files</CITE></A><BR><ACLASS="chapter"HREF="ch28_01.htm"TITLE="28. Comparing Files">Chapter 28: <CITECLASS="chapter">Comparing Files</CITE></A><BR><ACLASS="chapter"HREF="ch29_01.htm"TITLE="29. Spell Checking, Word Counting, and Textual Analysis">Chapter 29: <CITECLASS="chapter">Spell Checking, Word Counting, and Textual Analysis</CITE></A><BR></P></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="ch24_18.htm"TITLE="24.18 Huge Files Might Not Take a Lot of Disk Space "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 24.18 Huge Files Might Not Take a Lot of Disk Space "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="CHAPTER"HREF="ch25_01.htm"TITLE="25. Showing What's in a File"><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 25. Showing What's in a File"BORDER="0"></A></TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172">24.18 Huge Files Might Not Take a Lot of Disk Space </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">25. 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