chapter.regular.xml

<?xml version="1.0" encoding="UTF-8"?>
<chapter id="regular">
	<title>Regular expression (正则表达式)</title>
	<chapterinfo>
		<keywordset>
			<keyword>grep,egrep</keyword>
		</keywordset>
	</chapterinfo>
	<section id="regular.network">
		<title>Network 网络地址处理</title>
		<screen>
		<![CDATA[
$ wget -q -O - checkip.dyndns.org|sed -e 's/.*Current IP Address: //' -e 's/<.*$//'
202.130.101.34

$ curl -q -s http://checkip.dyndns.org | egrep -o '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+'
202.130.101.34

$ curl -q -s http://checkip.dyndns.org | egrep -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'
202.130.101.34
		]]>
		</screen>
	</section>
	<section id="regular.html">
		<title>HTML 处理</title>
		<para>url 抓取</para>
		<screen>
		<![CDATA[
$ curl -sq http://www.163.com | grep -o -E 'http://([^"#]+)'
		]]>
		</screen>
	</section>
</chapter>