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	<title>Comments on: Lấy xâu con trong shell script</title>
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		<title>By: Vân Anh</title>
		<link>http://openandfree.wordpress.com/2008/05/19/l%e1%ba%a5y-xau-con-trong-shell-script/#comment-485</link>
		<dc:creator>Vân Anh</dc:creator>
		<pubDate>Tue, 20 May 2008 04:49:06 +0000</pubDate>
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		<description>Trong zshell chúng ta có thể sử dụng cú pháp $string[ start_position, end_position ] để lấy ra xâu con bắt đầu từ vị trí start_position và kết thúc ở end_position. Ví dụ:
string=&quot;this is a substring test&quot;
echo $string[ 11, 19 ]

&lt;b&gt;substring&lt;/b&gt;</description>
		<content:encoded><![CDATA[<p>Trong zshell chúng ta có thể sử dụng cú pháp $string[ start_position, end_position ] để lấy ra xâu con bắt đầu từ vị trí start_position và kết thúc ở end_position. Ví dụ:<br />
string=&#8221;this is a substring test&#8221;<br />
echo $string[ 11, 19 ]</p>
<p><b>substring</b></p>
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