lc(1) on Linux
The text 977d8d2f6c38, as Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
Low Latency stdio <-> Layer 2 Filtering Bridge
Flags it lists
-
-c -
-e -
-l -
-m -
-r -
-t -
-w