kelbt(1) on Linux
The text 34684aa62687, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
generate backtracking LR parsers
Flags it lists
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--help -
--version -
-? -
-H -
-h -
-v