This is a little application that shows how many players on a list of srcds servers right now and which map they are playing on.
Entries that are marked bold have not answered for a couple of seconds
After going through the pain of setting up go it should be a simple
go build main.go
./srcdstop <server1:port1> <server2:port2> ...
Ctrl-C
This has only been tested with CSGO but should work with every source game (except The Ship).