du(1) on FreeBSD
The text 6d8ab21eaf5c, as FreeBSD 3.2-RELEASE, FreeBSD 3.1-RELEASE, FreeBSD 3.0-RELEASE shipped it.
display disk usage statistics
Flags it lists
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-H -
-L -
-P -
-a -
-c -
-d -
-k -
-s -
-x