buffer(1) on Linux
The text 3c0dc7a59200, as Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
very fast reblocking program
Flags it lists
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-B -
-S -
-Z -
-b -
-i -
-m -
-o -
-p -
-s -
-t -
-u -
-z