df -hExplanation:df: This command stands for "disk free" and reports the amount of disk space used and available on Linux filesystems.-h: This option stands for "human-readable" format, which makes the output easier to read by showing sizes in KB, MB, GB, etc.Sample Output:When you run the df -h command, you might see output similar to the following:Filesystem Size Used Avail Use% Mounted on /dev/sda1 40G 25G 15G 63% / udev 1.9G 0 1.9G 0% /dev tmpfs 384M 1.2M 383M 1% /run /dev/sda2 100G 50G 50G 50% /homeAdditional Tips:Specific Filesystem: To view the space for a specific filesystem, add its path at the end of the command, like so: df -h /homeInodes: To check free inodes instead of disk space, use the -i option: df -i