To retrieve the process ID for the parent process for your program, call the function getppid. : fork « System Functions « Perl






  1. Perl
  2. System Functions
  3. fork

To retrieve the process ID for the parent process for your program, call the function getppid.

      

# The syntax of the getppid function is parentid = getppid(); 
# A program that calls fork and getppid. 
#!/usr/local/bin/perl 

$otherid = fork(); 
if ($otherid == 0) { 
    # this is the child; retrieve parent ID 
    $otherid = getppid(); 
} else { 
    # this is the parent 
}








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4.Distinguish between the parent and child processes