java alternatives - Change auto mode

Question

I want to create 4 child process using os.fork() method and then inside the parent process I want to list all the child process. And also before terminating each child process I want that each child process must wait for 2 seconds. I was successful in creating 4 child process. but couldn't list the child processes using parent process. This is my code:

import os

for i in range(4):
  process = os.fork()

  if(process > 0):

Please Help in the above

Solution

Make the priority of /usr/lib/jvm/java-8-oracle/jre/bin/java higher that the rest to automatically enable it as default java binary.

You can do:

sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-8-oracle/jre/bin/java 1100

Here I have used priority value 1100, actually any value greater that 1074 would do.

Comments

[pbacterio]

The code snippet is incomplete

[MisterMiyagi]

Do you actually need to use os.fork? Python ships with several higher abstraction layers, most prominently the subprocess module.

[Divs 4799]

Yes I actually need to use os.fork

[Divs 4799]

@MisterMiyagi can You do it using sub process ?

[Community]

Please provide enough code so others can better understand or reproduce the problem.

[Divs 4799]

This is a very nice code but this is giving an error that no process is found using the pid 0.