Linux Server Management- Linux
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df Command - Check Disk Capacity
You can check the disk capacity with the df command.
df
This is a sample output result. The capacity is displayed in 1 Kbyte units for each disk.
Filesystem 1K-blocks Used Available Use% Mounted on udev 4044556 0 4044556 0% /dev tmpfs 812572 736 811836 1% /run /dev/sda1 30309264 4263080 26029800 15% / tmpfs 4062840 8 4062832 1% /dev/shm tmpfs 5120 0 5120 0% /run/lock tmpfs 4062840 0 4062840 0% /sys/fs/cgroup /dev/sda15 106858 3668 103190 4% /boot/efi /dev/sdc1 1055838644 77852 1002057420 1% /datadrive /dev/sdb1 16447292 45084 15547020 1% /mnt tmpfs 812568 0 812568 0% /run/user/1001
"/ Dev / sda1", "/ dev / sda15", "/ dev / sdc1", and "/ dev / sdb1" are logical disks separated by partitions. The file system is mounted on this.
The disk capacity displayed by df is not for the physical disk, but for the partition (logical disk) set on the physical disk.
To display in an easy-to-understand manner with units
Use the "-h" option to clearly display the units of the df command.
df -h
The output result has a unit.
Filesystem Size Used Avail Use% Mounted on udev 3.9G 0 3.9G 0% /dev tmpfs 794M 736K 793M 1% /run /dev/sda1 29G 4.1G 25G 15% / tmpfs 3.9G 8.0K 3.9G 1% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/sda15 105M 3.6M 101M 4% /boot/efi /dev/sdc1 1007G 77M 956G 1% /datadrive /dev/sdb1 16G 45M 15G 1% /mnt tmpfs 794M 0 794M 0% /run/user/1001
How to check the capacity of the directory?
Use the du command to check the capacity of the directory.
Note that the df command is a command to check the disk capacity, and the du command is used to check the directory capacity.