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Linux磁盘维护必备!15个高频命令

  • 2026-03-21 10:57:05
Linux磁盘维护必备!15个高频命令
运维人集合！磁盘管理是Linux系统维护的核心技能，掌握关键命令能让你效率翻倍～今天整理了15个磁盘维护高频命令，建议收藏随时翻阅！

📁 文件系统创建（核心工具）

  1. mkfs：Linux 通用文件系统格式化工具，支持 ext4/xfs/btrfs 等主流类型（替代单独的 mkfs.ext2/ext3/ext4，因其为 mkfs 的细分功能）。
  2. mkfs.minix：嵌入式系统专用轻量级文件系统创建工具。
  3. mkfs.msdos：U 盘 / 软盘等移动存储设备的 FAT 文件系统创建工具（替代 mformat，功能高度重叠且 mkfs.msdos 更通用）。
  4. mkfs.isofs：ISO 9660 光盘映像文件创建工具。

⚙️ 分区与特殊空间配置

  1. fdisk：命令行磁盘分区核心工具，支持批量创建 / 修改分区。
  2. mke2fs：ext 系列文件系统精细化创建工具（可自定义块大小、分区参数）。
  3. mkswap：创建交换（SWAP）分区 / 文件，扩展系统虚拟内存。

🔧 磁盘维护与优化

  1. swapon/swapoff：激活 / 关闭交换空间，灵活管理虚拟内存。
  2. mkinitrd：创建初始内存盘（ramdisk）映像，用于系统启动加载驱动。
  3. symlinks：检查并修复无效符号链接，优化磁盘使用。
  4. sync：强制同步内存数据到磁盘，防止数据丢失。

🚀 实用小贴士（保留核心）

  • 磁盘操作前务必备份重要数据！
  • 复杂分区建议先在虚拟机测试命令效果。
  • 定期使用 sync 命令确保数据安全。

总结

  1. 去重核心逻辑：剔除功能高度重叠的命令（如 mformat→mkfs.msdos、mkfs.ext2/ext3/ext4→归并入 mkfs 主命令），保留更通用 / 核心的工具。
  2. 结构优化：按 “文件系统创建→分区配置→维护优化” 分类，逻辑更清晰，同时保留所有独有的核心功能和实用贴士。
  3. 信息完整性：未删减任何独有的命令功能（如 minix/iso 文件系统、swap 空间、symlinks 等），仅合并重复项。
  4. #运维#网络安全#程序员
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  1. CONNECT:[ UseTime:0.000511s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000673s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000304s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000277s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000470s ]
  6. SELECT * FROM `set` [ RunTime:0.000192s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000582s ]
  8. SELECT * FROM `article` WHERE `id` = 479126 LIMIT 1 [ RunTime:0.000484s ]
  9. UPDATE `article` SET `lasttime` = 1774576467 WHERE `id` = 479126 [ RunTime:0.005033s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.000249s ]
  11. SELECT * FROM `article` WHERE `id` < 479126 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000509s ]
  12. SELECT * FROM `article` WHERE `id` > 479126 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000422s ]
  13. SELECT * FROM `article` WHERE `id` < 479126 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002126s ]
  14. SELECT * FROM `article` WHERE `id` < 479126 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001343s ]
  15. SELECT * FROM `article` WHERE `id` < 479126 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005390s ]
0.086719s