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linux(第六期)--Ubuntu磁盘管理-- Ubuntu20.04

  • 2026-06-30 11:54:03
linux(第六期)--Ubuntu磁盘管理-- Ubuntu20.04

🎬渡水无言：渡水无言

❄专栏传送门：《linux专栏》《嵌入式linux驱动开发》《linux系统移植专栏》

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在这里主要分享自己学习的linux嵌入式领域知识；有分享错误或者不足的地方欢迎大佬指导，也欢迎各位大佬互相三连

Ubuntu磁盘文件

/dev/sd*文件，此类文件是磁盘设备文件，并不能直接访问磁盘，必须要将磁盘挂载到某一个目录下才可以访问。

/dev/sdb和/dev/sdb1是U盘的设备文件。

/dev/sdb表示U盘，/dev/sdb1表示U盘的第一个分区。

磁盘和目录的容量查询命令

df：列出文件系统的整体磁盘使用量。主要查看个文件系统的使用量，

du:评估文件系统的磁盘使用量，主要查看单个文件的大小。

磁盘挂载与卸载，分区和格式化

1、磁盘的挂载和卸载

mount和umount命令

2、磁盘分区

fdisk命令

3、磁盘格式化

磁盘分区创建好以后就可以格式化磁盘，使用命令mkfs。如：

mkfs -t vfat /dev/sdx

总结

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  138. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/runtime/temp/067d451b9a0c665040f3f1bdd3293d68.php ( 11.98 KB )
  140. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000756s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000754s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000774s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.006963s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000656s ]
  6. SELECT * FROM `set` [ RunTime:0.000423s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000644s ]
  8. SELECT * FROM `article` WHERE `id` = 492439 LIMIT 1 [ RunTime:0.001643s ]
  9. UPDATE `article` SET `lasttime` = 1783038533 WHERE `id` = 492439 [ RunTime:0.004380s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.000325s ]
  11. SELECT * FROM `article` WHERE `id` < 492439 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001012s ]
  12. SELECT * FROM `article` WHERE `id` > 492439 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000535s ]
  13. SELECT * FROM `article` WHERE `id` < 492439 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.006226s ]
  14. SELECT * FROM `article` WHERE `id` < 492439 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.023641s ]
  15. SELECT * FROM `article` WHERE `id` < 492439 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.046441s ]
0.326908s