查看linux的分区 大小

df -h

Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1        20G   10G   10G  50% /
tmpfs           1.9G     0  1.9G   0% /dev/shm
/dev/sdb1       100G   40G   60G  40% /data

lsblk -o NAME,SIZE,MOUNTPOINT

NAME   SIZE MOUNTPOINT
sda     100G
├─sda1   20G /
└─sda2   80G
sdb    1000G
└─sdb1  100G /data

sudo fdisk -l

Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: ...

Device     Start       End   Sectors   Size Type
/dev/sda1    2048   4194303   4192256   2G Linux filesystem
/dev/sda2 4194304 209715199 205520896  98G Linux filesystem

Disk /dev/sdb: 1 TiB, 1099511627776 bytes, 2147483648 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: ...

Device     Start       End   Sectors   Size Type
/dev/sdb1  2048 2147483647 2147481600  1T Linux filesystem

sudo cfdisk