obgrep(1) on Linux
The text 9593c9056f13, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
an advanced molecular search program using SMARTS
Flags it lists
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-c -
-f -
-i -
-n -
-t -
-v