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你真的懂Linux启动吗？🚀

2025-12-04 04:50:41

你真的懂Linux启动吗？🚀

你真的懂Linux启动吗？🚀

你真的懂Linux启动吗？🚀

你真的懂Linux启动吗？🚀

你真的懂Linux启动吗？🚀

你真的懂Linux启动吗？🚀

你真的懂Linux启动吗？🚀

你真的懂Linux启动吗？🚀

从按下电源键到看到登录界面，Linux系统经历了什么？
🔥 完整8步拆解：
• Power On → BIOS/UEFI自检
• GRUB引导加载器选择内核
• Kernel解压并初始化硬件
• systemd启动所有服务
• 执行启动脚本配置环境
• 最终进入多用户登录状态
💡 关键知识点：
✓ POST硬件自检过程
✓ GRUB配置文件位置
✓ 内核模式vs用户模式切换
✓ systemd的PID 1作用
✓ 启动脚本执行顺序
这不仅是面试必考题，更是深入理解Linux系统架构的基础！掌握启动流程能让你快速定位系统问题、优化启动速度。

#Linux #操作系统 #运维开发 #系统启动 #内核 #systemd #GRUB #技术学习

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请求信息 : 2025-12-07 20:48:11 HTTP/2.0 GET : https://f.mffb.com.cn/a/457348.html
运行时间 : 0.086220s [ 吞吐率：11.60req/s ] 内存消耗：4,120.98kb 文件加载：140
缓存信息 : 0 reads,0 writes
会话信息 : SESSION_ID=3a1336d6b7593c9ae00911b6c490f783

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CONNECT:[ UseTime:0.000507s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000975s ]
SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000362s ]
SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000256s ]
SHOW FULL COLUMNS FROM `set` [ RunTime:0.000485s ]
SELECT * FROM `set` [ RunTime:0.000190s ]
SHOW FULL COLUMNS FROM `article` [ RunTime:0.000604s ]
SELECT * FROM `article` WHERE `id` = 457348 LIMIT 1 [ RunTime:0.000395s ]
UPDATE `article` SET `lasttime` = 1765111691 WHERE `id` = 457348 [ RunTime:0.004173s ]
SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.000237s ]
SELECT * FROM `article` WHERE `id` < 457348 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000441s ]
SELECT * FROM `article` WHERE `id` > 457348 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000709s ]
SELECT * FROM `article` WHERE `id` < 457348 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001561s ]
SELECT * FROM `article` WHERE `id` < 457348 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001852s ]
SELECT * FROM `article` WHERE `id` < 457348 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000520s ]

0.088087s

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