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初级:http://www.oschina.net/translate/useful-linux-commands-for-newbies
中级:http://www.oschina.net/translate/20-advanced-commands-for-middle-level-linux-users
高级:http://www.oschina.net/translate/20-advanced-commands-for-linux-experts
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初级:http://www.oschina.net/translate/useful-linux-commands-for-newbies
中级:http://www.oschina.net/translate/20-advanced-commands-for-middle-level-linux-users
高级:http://www.oschina.net/translate/20-advanced-commands-for-linux-experts
[/size]