January 2004
Intermediate to advanced
432 pages
11h 1m
English
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Process Identity Crisis: The exec() System Call
When an established thread desires to replace its logical memory view with that of another program, “changing its stripes,” so to speak, it places a system call to exec(). The exec() call is passed the name of an executable file. The file may be either a compiled binary image or a text file to be processed as a script by an interpreter program such as the POSIX shell or PERL.
In the case of a compiled program, the file starts with a header written in a format recognizable to the operating system and containing a “magic number” indicating the hardware platform, O/S type, and version for which the code was compiled. If the magic number does not match those acceptable to the kernel, an error message ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.