xfs_estimate(8) on Linux
The text 982962158c62, as Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
estimate the space that an XFS filesystem will take
Flags it lists
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-? -
-b -
-e -
-h -
-i -
-v