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摘要：Using this kind of distribution, you can boot your PC from the CD and run linux distribution without having to install anything on your hard driver! 阅读全文

摘要：site: http://x.cygwin.com/download and installingusage:command: startxwin 阅读全文

摘要：1. variable2. control flow3. commands3.1 how to set your own prompt echo $PS1 -- the default format of your command line prompt echo $PS2 -- the format of the second-tier command line prompt update: PS1="[\t]\$" it will show like this:[21:51:22]$ (this only apply to the current session)3.2 阅读全文

摘要：=> /var/log/messages : General log messages=> /var/log/boot : System boot log=> /var/log/debug : Debugging log messages=> /var/log/auth.log : User login and authentication logs=> /var/log/daemon.log : Running services such as squid, ntpd and others log message to this file=> /var/l 阅读全文