How can i get process id of UNIX command i am triggering in a Perl script?

Question

I am triggering a UNIX command in Perl script.

I need the process ID of the UNIX command.

For example if i trigger below UNIX command:

# padv         


        

Answer 1

Call fork to create a child process. The process ID of the child process is returned to the parent process. The child process can then call exec to execute the program you want.