February 2012
Intermediate to advanced
1184 pages
37h 17m
English
Content preview from Programming Perl, 4th Editionshmread
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shmread 
shmreadID,VAR,POS,SIZE
This function reads from the shared memory segment
ID starting at position
POS for size SIZE
(by attaching to it, copying out, and detaching from it).
VAR must be a variable that will hold the
data read. The function returns true if successful, or false if there is
an error.
This function is available only on machines supporting System V IPC.
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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.