#Python process control for PyWPS

This code is supposed to demonstrate the ability to create, pause/suspend, resume and kill/terminate processes by Python. It uses a combination of multiprocessing and psutil (http://pythonhosted.org/psutil/#processes) library.

The program (file main.py) runs simple process of writing lines of numbers into file output.txt (lines of main.py 6-12). During short time intervals, the program pause the process printing numbers into the file for 20 seconds (lines 36-38 in main.py). After 20 seconds process continues to printing lines into the file for next 20 seconds, then is forced to terminate (lines 36-42).

##Installation

1. create virtualenv

2. clone project

git clone https://github.com/jan-rudolf/python-process-control.git

3. install requirements

pip install -r requirements.txt

##Run

Make sure, that two command line windows are opened in the project directory.

###Step 1 in window 1

Make sure, that output.txt is an empty file and you are waiting/scanning for whatever new content comes in, everytime before step 2:

rm output.txt 2>/dev/null;touch output.txt;tail -f output.txt

###Step 2 in window 2

Run python main.py and observe the output of the program and the content of the file output.txt in the window 1.