lsblk、findmnt、df、du

lsblk

列出设备全路径、UUID、挂载点、文件系统类型

lsblk -fp
NAME                                      FSTYPE FSVER   LABEL                UUID                                   FSAVAIL FSUSE% MOUNTPOINTS
/dev/sda                                                                                                                            
├─/dev/sda1                               vfat   FAT32                        09C2-9A92                               591.8M     1% /boot/efi
├─/dev/sda2                               xfs                                 b199f8e9-dac1-4715-9304-4e3094d6aa14    659.4M    31% /boot
└─/dev/sda3                               LVM2_m LVM2 00                      8cFy6a-N0la-vGlk-2eJz-u7AP-sUCV-ODn2dZ                
  ├─/dev/mapper/rl_miwifi--rb06--srv-root xfs                                 2c93a413-d2a8-4cfd-8dab-a12272450b03     33.2G     9% /
  ├─/dev/mapper/rl_miwifi--rb06--srv-swap swap   1                            2848b910-adca-4971-9e54-50abde9a36bb                  [SWAP]
  └─/dev/mapper/rl_miwifi--rb06--srv-home xfs                                 d89064bd-8f65-4e3c-a03d-85a982c02e3a     17.7G     1% /home
/dev/sr0                                  iso966 Joliet  Rocky-9-3-x86_64-dvd 2023-11-12-21-32-45-00

findmnt

显示挂在情况，如挂载选项等

-S 指定源

findmnt -S /dev/sda1
TARGET    SOURCE    FSTYPE OPTIONS
/boot/efi /dev/sda1 vfat   rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=winnt,errors=remount-ro

findmnt /
TARGET SOURCE                                FSTYPE OPTIONS
/      /dev/mapper/rl_miwifi--rb06--srv-root xfs    rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota

-s 从 /etc/fstab 读取挂载信息

findmnt -s
TARGET    SOURCE                                    FSTYPE OPTIONS
/         /dev/mapper/rl_miwifi--rb06--srv-root     xfs    defaults
/boot     UUID=b199f8e9-dac1-4715-9304-4e3094d6aa14 xfs    defaults
/boot/efi UUID=09C2-9A92                            vfat   umask=0077,shortname=winnt
/home     /dev/mapper/rl_miwifi--rb06--srv-home     xfs    defaults
none      /dev/mapper/rl_miwifi--rb06--srv-swap     swap   defaults

df

提供有关文件系统总使用量的信息

-h 选项以人类可读的形式输出信息；-T 选项显示文件系统的格式类型

df -hT
Filesystem                            Type      Size  Used Avail Use% Mounted on
devtmpfs                              devtmpfs  4.0M     0  4.0M   0% /dev
tmpfs                                 tmpfs     888M     0  888M   0% /dev/shm
tmpfs                                 tmpfs     355M   33M  323M  10% /run
/dev/mapper/rl_miwifi--rb06--srv-root xfs        37G  3.4G   34G  10% /
/dev/mapper/rl_miwifi--rb06--srv-home xfs        18G  160M   18G   1% /home
/dev/sda2                             xfs       960M  301M  660M  32% /boot
/dev/sda1                             vfat      599M  7.1M  592M   2% /boot/efi
overlay                               overlay    37G  3.4G   34G  10% /var/lib/docker/overlay2/f2eb4ae42b15810ecd5594e4a4228aae0c1ac36c7f6da18d97bcec37eb6a2305/merged
tmpfs                                 tmpfs     178M     0  178M   0% /run/user/0

du

显示给定目录及其子目录中所有文件的总大小

-h 以人类可读的形式输出

du -h /root
28K	/root/.ssh
0	/root/.config/procps
0	/root/.config
8.0K	/root/.xterminal/sub/cpu
8.0K	/root/.xterminal/sub/fs_size
8.0K	/root/.xterminal/sub/fs_stats
8.0K	/root/.xterminal/sub/memory
8.0K	/root/.xterminal/sub/network_stats
8.0K	/root/.xterminal/sub/os
8.0K	/root/.xterminal/sub/process
8.0K	/root/.xterminal/sub/time
8.0K	/root/.xterminal/sub/gpu
72K	/root/.xterminal/sub
104K	/root/.xterminal
20K	/root/router_ipv6
14M	/root/ddns
4.0K	/root/.aliyun
342M	/root

-s 仅显示指定目录或文件的总大小

du -sh /root
342M	/root