February 2012
Intermediate to advanced
1184 pages
37h 17m
English
Content preview from Programming Perl, 4th Editiongetppid
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getppid 
getppid
This function returns the process ID of the parent process. On the typical Unix system, if your parent process ID changes to 1, it means your parent process has died and you’ve been adopted by the init(8) program.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.