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6.34.&nbsp;Grep-2.21
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Linux From Scratch - Version 7.7-systemd
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Chapter&nbsp;6.&nbsp;Installing Basic System Software
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<a id="ch-system-grep" name="ch-system-grep"></a>6.34. Grep-2.21
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The Grep package contains programs for searching through files.
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<strong class="segtitle">Approximate build time:</strong>
<span class="segbody">0.4 SBU</span>
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<strong class="segtitle">Required disk space:</strong>
<span class="segbody">30 MB</span>
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6.34.1. Installation of Grep
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First fix a potential security issue identified upstream:
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<pre class="userinput">
<kbd class=
"command">sed -i -e '/tp++/a if (ep &lt;= tp) break;' src/kwset.c</kbd>
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Prepare Grep for compilation:
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<kbd class="command">./configure --prefix=/usr --bindir=/bin</kbd>
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Compile the package:
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<kbd class="command">make</kbd>
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To test the results, issue:
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<kbd class="command">make check</kbd>
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Install the package:
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<kbd class="command">make install</kbd>
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<a id="contents-grep" name="contents-grep"></a>6.34.2. Contents of
Grep
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<strong class="segtitle">Installed programs:</strong>
<span class="segbody">egrep, fgrep, and grep</span>
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Short Descriptions
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<p>
<a id="egrep" name="egrep"></a><span class=
"term"><span class=
"command"><strong>egrep</strong></span></span>
</p>
</td>
<td>
<p>
Prints lines matching an extended regular expression
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</tr>
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<td>
<p>
<a id="fgrep" name="fgrep"></a><span class=
"term"><span class=
"command"><strong>fgrep</strong></span></span>
</p>
</td>
<td>
<p>
Prints lines matching a list of fixed strings
</p>
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<tr>
<td>
<p>
<a id="grep" name="grep"></a><span class=
"term"><span class=
"command"><strong>grep</strong></span></span>
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Prints lines matching a basic regular expression
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