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看完这28页纸,你的Linux就牛大了....

  • 2026-08-18 23:12:02
看完这28页纸,你的Linux就牛大了....

最近我把 Linux 运维里高频的内容重新整理了一遍：命令、磁盘、用户、权限、目录、systemd、进程、网络、cron、性能排查，一共20章。

每章都不是只讲“怎么用”，还加了生产风险、排障场景和面试高频题。

做运维、学Linux，或者准备往网安走的，建议把这份过一遍。会命令只是入门，会排障才是真的能干活。

~
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嵌入式Linux音频开发必备技能:一文带你精通 asound.conf

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  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=1231962fd78214248a4a92b8dfceea74
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  1. CONNECT:[ UseTime:0.000762s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000537s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.003149s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002838s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000570s ]
  6. SELECT * FROM `set` [ RunTime:0.004191s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000624s ]
  8. SELECT * FROM `article` WHERE `id` = 510049 LIMIT 1 [ RunTime:0.013725s ]
  9. UPDATE `article` SET `lasttime` = 1787290467 WHERE `id` = 510049 [ RunTime:0.001987s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.006520s ]
  11. SELECT * FROM `article` WHERE `id` < 510049 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.004908s ]
  12. SELECT * FROM `article` WHERE `id` > 510049 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.013774s ]
  13. SELECT * FROM `article` WHERE `id` < 510049 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.056702s ]
  14. SELECT * FROM `article` WHERE `id` < 510049 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.012704s ]
  15. SELECT * FROM `article` WHERE `id` < 510049 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.096096s ]
0.398769s