ra(1) on Linux
The text 4b636e883d52, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
read argus(8) data.
Flags it lists
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-A -
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-R -
-S -
-T -
-Z -
-b -
-d -
-h -
-n -
-p -
-q -
-t -
-u -
-w -
-z