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Linux实用教程(第4版 微课版) 於岳 课后习题答案解析

  • 2026-03-26 07:05:38
Linux实用教程(第4版 微课版) 於岳 课后习题答案解析

书籍基本信息

书名：Linux实用教程（第4版 微课版）
主编：於岳
ISBN：9787115549358
出版社：人民邮电出版社

学习经验分享

我是一名学习这本教材的计算机专业初学者，这本书深入浅出地讲解了Linux系统的使用和管理，对我在计算机领域的学习和实践帮助很大。作为初学者我在知识点理解运用上还有一些困惑，也总结了自己的学习计划和方法分享给大家。

学习规划上，我计划多渠道收集PPT、视频教程、教学案例等学习资料，同时查阅相关参考书，还打算加入Linux相关的论坛社群，向资深学习者请教。

学习方法上，我会结合教材和网络资源，通过实践操作巩固加深对Linux系统的理解，平时也会和同学交流讨论，共同进步。也欢迎大家分享更多Linux学习的经验、资料和建议！

课后习题答案

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  1. CONNECT:[ UseTime:0.000748s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000765s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000268s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000287s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000629s ]
  6. SELECT * FROM `set` [ RunTime:0.000206s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000535s ]
  8. SELECT * FROM `article` WHERE `id` = 480062 LIMIT 1 [ RunTime:0.000348s ]
  9. UPDATE `article` SET `lasttime` = 1774576820 WHERE `id` = 480062 [ RunTime:0.005356s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.000235s ]
  11. SELECT * FROM `article` WHERE `id` < 480062 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000408s ]
  12. SELECT * FROM `article` WHERE `id` > 480062 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000449s ]
  13. SELECT * FROM `article` WHERE `id` < 480062 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003185s ]
  14. SELECT * FROM `article` WHERE `id` < 480062 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.004796s ]
  15. SELECT * FROM `article` WHERE `id` < 480062 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.010519s ]
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