To run the server type

xc <program 1 name> <program 2 name>

The server requires that the Kalah agent flush the output by calling 
fflush(stdout) after every write the stdout. Alternately the Kalah agent 
may set stdout to be un-buffered by calling setbuf(stdout,NULL);

To run a program that requires more than 1 command i.e. Java
Make a script file with the full command
For example make a file that contains only this text
java KalahAgent

Then do a chmod on the file to make it a executable and pass that file 
into the server as an argument.

For example if the file we created is called s

Then we type

Chmod +x s 
To make it executable

Then type 
xc s kalah