Which of the following commands will give you the amount of diskspace used on the root filesystem in

Which of the following commands will give you the amount of diskspace used on the root filesystem in kilobytes ? (choose the best 2 answers)

A.
du -k /

B.
df -skx /

C.
df -k /

D.
du -skx /

Explanation:
df report how much free disk space is available for each mount you have.
most useful option:
-h, –human-readable print sizes in human readable format (e.g., 1K 234M 2G)
-i, –inodes list inode information instead of block usage
-k like –block-size=1K

du – estimate file space usage
-k,
like –block-size=1K
-s, –summarize
display only a total for each argument
-x, –one-file-system
skip directories on different filesystems