pipebench(1) on Linux
The text bd623de5c5a0, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
Shows speed of stdin/stdout communication
Flags it lists
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-I -
-Q -
-S -
-b -
-e -
-h -
-o -
-q -
-r -
-s -
-u