df(1) on FreeBSD
The text a1b4d517bf2b, as FreeBSD 4.5-RELEASE, FreeBSD 4.4-RELEASE shipped it.
display free disk space
Flags it lists
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-H -
-P -
-a -
-b -
-g -
-h -
-i -
-k -
-l -
-m -
-n -
-t