jot(1) on FreeBSD
The text c54c69445fb0, as FreeBSD 4.11-RELEASE, FreeBSD 4.10-RELEASE, FreeBSD 4.9-RELEASE, FreeBSD 4.8-RELEASE, FreeBSD 4.7-RELEASE shipped it.
print sequential or random data
Flags it lists
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-b -
-c -
-n -
-p -
-r -
-s -
-w