How to check the PPID?

To check the Parent Process ID (PPID) in a Unix-like operating system, you can use the echo command along with the special variable $$. Here's how to do it:

Using the Shell:

1. Open your terminal.
2. Run the following command:

   echo $PPID

Explanation:

• $PPID: This variable holds the Parent Process ID of the current shell.

Example:

If you run the command in a terminal, it will output the PPID of the shell you are currently in.

If you need further assistance or examples, feel free to ask!