extcheck(1) on Linux
The text f7a26302bef4, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy) shipped it.
check hierarchical ext(5) files for global node connectivity and summarize number of fets, nodes, etc.
Flags it lists
-
-C -
-R -
-S -
-T -
-c -
-p -
-r -
-s