Obtaining PID of a shell / python script inside the script itself

Question

How can I obtain the PID of a shell script inside the script itself and pass the same to another script?

Answer 1

The process ID of the current process can be retrieved with os.getpid().

import os

print("This process has the PID", os.getpid())

In bash, you can use $$ to get the PID of the bash instance running the script.

Answer 2

It's years and years later but in UNIX systems $$ is a type of variable for shell PID.

You should try;

echo $$

Code above returns the PID of the shell you are working at.

And also Python's os library has a method called getpid

import os
os.getpid()

You can store this variable in temp file in /tmp/anyFile path. And by doing this, other script you mentioned could access this file