2002-02-18 00:00:00 +00:00
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<!DOCTYPE html PUBLIC "-//W3C/DTD HTML 3.2 Final//EN">
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2001-01-15 00:00:00 +00:00
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<html><head>
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<title>BVI: Search Commands</title>
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2002-02-18 00:00:00 +00:00
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<img src="gif/dot.gif" width="130" height="1" alt="">
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2001-01-15 00:00:00 +00:00
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<a class="ths" href="qt_edit.html">Editing Files</a><br>
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<font color="#ffffff" class="ths">Search Commands<br></font>
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<a class="ths" href="qt_bit.html">Bit-wise Operations</a><br>
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2002-02-18 00:00:00 +00:00
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<td width="1%"><img src="gif/dot.gif" width="40" height="1" alt=""></td>
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2001-01-15 00:00:00 +00:00
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<td width="99%">
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<table width="100%" cellspacing="0" cellpadding="0" border="0">
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<tr><td width="99%">
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<font class="head">Quick Tutorial</font>
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<br><font class="sub">Search Commands</font>
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<a href="index.html">
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<img src="gif/bvi_s.gif" alt="BVI" width="116"
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height="62" border="0"></a>
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</td></tr></table>
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<p>
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Additional to the well known <B>/</B> and <B>?</B> for searching ASCII
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strings there are two new commands for searching binary strings. These
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are the keys <B>\</B> and <B>#</B>.
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<P>
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In the ASCII search commands <B>/</B> and <B>?</B> you can use \n, \r,
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\t and \0. You can also use regular expressions. Do <I>not</I> use
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<B>^</B> and <B>$</B>, because there are no lines in a binary file.
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Type <B><TT>/foo\0</TT><FONT COLOR=#AAAAAA>RETURN</FONT></B> to
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search for the null terminated string <I>foo</I> in the file.
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<P>
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In the Hex section you can search for a sequence of bytes in hexadecimal
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notation, e.g. <NOBR><B><TT>\01 AF 12</TT><FONT COLOR=#AAAAAA>RETURN</FONT></B>,
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</NOBR> which is the same as <NOBR><B><TT>\01AF12</TT><FONT COLOR=#AAAAAA>
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RETURN</FONT></B></NOBR>.
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You can also use regular expressions and quoted ASCII strings. Inside of
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the quotes no character is treated as a special character!<BR>
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Example:
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<B><TT>\01 [^AF DE] "foo" 00 </TT><FONT COLOR=#AAAAAA>RETURN</FONT></B>
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<BR>
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This means: Search for a string beginning with 01, the second character
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must not be a hex <TT>AF</TT> or <TT>DE</TT>, followed by the ASCII
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characters <TT>foo</TT>, terminated with a binary zero.
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<H3>Global Search</H3>
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There is also a global search option available, but only with the
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print option.<BR>
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Example:
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<BLOCKQUOTE>
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<B><TT>:g/text_pattern/p</TT><FONT COLOR=#AAAAAA>RETURN</FONT></B>
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<BR>or<BR>
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<B><TT>:g\hex_pattern\p</TT><FONT COLOR=#AAAAAA>RETURN</FONT></B>
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</BLOCKQUOTE>
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This commands are displaying all found patterns, one per screen line.
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Of course you can limit the search to a certain part of the file by
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specifying the starting and ending address.<BR>
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Other forms of the global search command
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are line oriented, therefor <B>not</B> useful for binary files and
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<B>not implemented</B>, e.g.<BR>
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<BLOCKQUOTE>
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<TABLE>
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<TR><TD>:g/pattern/d</TD><TD>Delete all lines containing <I>pattern</I></TD></TR>
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<TR><TD>:g/pattern/y</TD><TD>Yank all lines containing <I>pattern</I></TD></TR>
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<TR><TD>:g!/pattern/p</TD><TD>Print all lines <B>not</B> containing <I>pattern</I></TD></TR>
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</TABLE>
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</BLOCKQUOTE>
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<p><font size="-1">
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<hr noshade>
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2005-01-07 00:00:00 +00:00
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<i>Last update: Thu Jun 01 12:00:00 CEST 2000 by Gerhard Bürgmann,
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<a class="btop" href="http://www.purkersdorf-online.at/">Purkersdorf</a>/Austria</i>
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2001-01-15 00:00:00 +00:00
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