A simple server client with fielsystem based token.
A client application (front_end) opens file data.txt, reads integers, sends the integers to the server (sorter), creates a file "token". The client waits for the sorter to remove the token file. The client prints the sorted data.
Sorter waits for a token file, reads the integers, sorts the integers, sends the sorted list back to the client, removes the token.
Build & run
./test.sh