ns_ictl(3aolserver) on Linux
The text 6c4a87547ffc, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it. The page shows this text now.
Facility to control AOLserver multi-threaded Tcl interpreters