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Linux note
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Linux note
chmod和数字改变文件或目录的访问权限
chown改变目录或文件的所有权
chown root $dir
-R 递归子目录
http://soft.yesky.com/115/11046615.shtml
echo "" >>/> file
在linux系统下，我们通常可以通过以下2条命令来简单了解当前系统的网络连接情况：
#netstat -altn 得到当前所有网络连接信息
#netstat -ntlp 得到系统所开放的网络端口
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JagoWang commented Mar 9, 2013

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