Parent process of the current process

[wehttam]

I am sorry to ask such a seemingly basic question....

What is the command to display the parent process id of the current process?

I am writing a script which requires the child process to report the process id of its parent, and append this id to a file. I looked at ps -o "%P" and ps -o ppid ; however these return a column header...

any help is appreciated!

Thanks

 

[wehttam]

Is there any variation on the "echo $$" which could display the parent process id?

 

[wehttam]

Nevermind......... echo $PPID works perfectly!