I have a script which gets input from the user through command line arguments. It processes the arguments and starts running python commands. For Example:
./run.sh p1 p2 p3 p4
python abc.py p1 p4
python xyz.py p2 p3
Try running each process in the background by adding
& to the end of the command.
python abc.py p1 p4 & python xyz.py p2 p3 &