netwatch(1) on Linux
The text c47c0ad0bd45, as Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it.
Ethernet Internet Protocol Monitor
Flags it lists
-
-c -
-e -
-h
The text c47c0ad0bd45, as Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it.
Ethernet Internet Protocol Monitor
-c
-e
-h