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		<title>重定向的几个组合应用</title>
		<link>http://hqlong.com/2009/06/851.html</link>
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		<pubDate>Wed, 24 Jun 2009 06:57:17 +0000</pubDate>
		<dc:creator>机器人</dc:creator>
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		<description><![CDATA[cmd 2&#62;file      把文件描述符2重定向到file，即把错误输出存到file中。 cmd &#62; file 2&#62;&#38;1     把标准错误重定向到标准输出，再重定向到file，即stderr和stdout都被输出到file中 cmd &#38;&#62; fi... ]]></description>
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