Which description matches the output of df -h?

Which description matches the output of df -h?

• A. The disk space usage in a human-readable format.
• B. The number of inodes used in the filesystem.
• C. The MAC address table size.
• D. The ARP cache entries.

Answer: (A)

The command df -h shows disk space usage for each mounted filesystem in a human-friendly format. It reports the total size, how much is used, how much is available, and the usage percentage, with numbers shown using units like K, M, or G instead of plain block counts. This makes it easy to quickly assess free space. If you omit -h, df presents the numbers in 1K-blocks by default. Note that inodes usage is shown with df -i, and the MAC address table size or ARP cache entries are not what df outputs.

The command df -h shows disk space usage for each mounted filesystem in a human-friendly format. It reports the total size, how much is used, how much is available, and the usage percentage, with numbers shown using units like K, M, or G instead of plain block counts. This makes it easy to quickly assess free space. If you omit -h, df presents the numbers in 1K-blocks by default. Note that inodes usage is shown with df -i, and the MAC address table size or ARP cache entries are not what df outputs.