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	<title>内卡河语思 &#187; linux学习笔记</title>
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	<description>Be astronomist, be gastronomist</description>
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		<title>命令行学习20100501</title>
		<link>http://blog.hippoh.org/archives/1920</link>
		<comments>http://blog.hippoh.org/archives/1920#comments</comments>
		<pubDate>Sat, 01 May 2010 20:57:55 +0000</pubDate>
		<dc:creator>hippoh</dc:creator>
				<category><![CDATA[linux学习笔记]]></category>
		<category><![CDATA[顾上网技术凭算法]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[ubuntu]]></category>

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		<description><![CDATA[记录几个用到的命令行方式... ]]></description>
			<content:encoded><![CDATA[<p>记录几个用到的命令行方式。</p>
<p><strong>从本地链接到机器a，再链接到机器b，local---&gt;a---&gt;b</strong></p>
<p>方法1:</p>
<blockquote><p>ssh a -t "ssh b"</p></blockquote>
<p>方法2:</p>
<p>修改文件 ~/.ssh/config为</p>
<blockquote><p>Host b</p>
<p>Proxy Command ssh a exec nc -q 0 %h%p 2 &gt; /dev/null</p></blockquote>
<p>再直接ssh b即可，这个方法的缺点是今后将不能直接链接b机器。</p>
<p><strong>删除一个非空目录path</strong></p>
<blockquote><p>sudo rm -r path</p></blockquote>
<p><strong>针对一定条件的文件执行命令</strong></p>
<blockquote><p>find 条件 -exec 'command' {} ;</p></blockquote>
<p><strong>vpnc设置方法</strong></p>
<blockquote><p>在/etc/vpnc/hd.conf中写入如下内容</p>
<p>IPSec gateway vpn.uni-heidelberg.de<br />
IPSec ID vpnsrv1-hybrid<br />
IPSec obfuscated secret E480AF0A2880D80C85222140B70D4B45A22458D3D2F07CBC319D1044C13A9105302CD724C12CEFD3BAA566E5ACE6715F808FF9345F437B8B<br />
IKE Authmode hybrid<br />
IKE DH Group dh2<br />
CA-File /etc/vpnc/rootcert</p>
<p>#######<br />
Xauth username 用户名<br />
Xauth password 密码</p>
<p>再下载一个大学提供的rootcert文件放在同样目录中即可。</p></blockquote>
<p><strong>编译fortran 自由格式程序</strong></p>
<p>方法1:</p>
<blockquote><p>gfortran 文件名.f90 -o 文件名.o</p></blockquote>
<p>方法2</p>
<blockquote><p>gcc 文件名.f90 -o 文件名.o -lgfortran -lgfortranbegin</p></blockquote>
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