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以前发表过一篇博文How to install packages with apt-get on a system connected via proxy?地址在http://blog.sina.com.cn/s/blog_64b236da01017y2i.html不过现在发现一篇更加好的，就转了升级到Ubuntu10.04后，发现apt-get的代理设置有改变了，在9.10以前使用“http_proxy”环境变量就可以令apt-get使用代理了export http_proxy=http://127.0.0.1:8000sudo apt-get update然后在Ubuntu10.04下就无 阅读全文
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How to be a WinnerAdvice for students starting into research workView this page in Romaniancourtesy of Jan Rolsky[N.B.: Observations and recommendations based on first being a UROP student at MIT and later supervising numerous UROP students at MIT and undergraduates and graduate students at UCB.]Don 阅读全文
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Software Defined Radio Challenges and Opportunities’Notes2013/3/10 Nick ChanPaper come from IEEE COMMUNICATIONS SURVEYS & TUTORIALS, VOL. 12, NO. 4, FOURTH QUARTER 2010. Software Defined Radio: Challenges and OpportunitiesAbstract—Software Defined Radio (SDR) may provide flexible, upgradeable an 阅读全文
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从“阿帕网”的出现到IPv6的正式启用，整整已有43年！在这43年里，不管对于个人用户还是企业商家来说，互联网的快速增长都给他们带来了巨大的冲击。从这段历史里面，我们见证了雅虎的雄起和没落，也见证了IP协议的更新换代。下面的图标记了互联网历史上比较耀眼的里程碑，Google、苹果、Android和iPhone等熟悉的字眼也毅然写入了里面。如果想知道更多的信息，请你读下面的图。 阅读全文
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最好解决办法是安装vmware-tools，这样就可以使用unity我是按了ctrl + alt + enter 阅读全文
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word2007安装MathType后,原有复制粘贴功能被禁止，显示该工程中的宏被禁止，上网查了一下资料，解决了。 点word左上角的那个圆球(word2007的start按钮)->word选项->信任中心->信任中心设置->禁用宏 阅读全文
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Today I use sudo apt-get update and it comes this error.W: GPG error: http://ppa.launchpad.net lucid Release: Thefollowing signatures couldn't be verified because the public key isnot available: NO_PUBKEY 0E309B718DA8F7C3It means some sources are not official so that is nokey.due to a missing GP 阅读全文
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How to install OsmocomBBAtract :OsmocomBB is an Free Software / Open Source GSM Baseband software implementation.By using OsmocomBB on a compatible phone, you are able to make and receive phone calls, send and receive SMS, etc. based on Free Software only.Introduce :This is the project page about th 阅读全文
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Abstract : NS2 widely uses in network simulator. Toady let's install it.Introduce : Ns is a discrete event simulator targeted at networkingresearch. Ns provides substantial support for simulation of TCP,routing, and multicast protocols over wired and wireless (local andsatellite) networks.I need 阅读全文
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Abstract :The apt-get work via proxy.Introduce :Proxy is widespread using in network. Ubuntu is base on Linuxand it can use proxy too. However the apt-get is not working if uonly set proxy on OS.Recently, I got Ubuntu 10.04 system connected via a proxy tothe internet and I found apt-get can't wo 阅读全文