System Programming in Perl

(The Unix Process Model)

Length: 75 minutes

Description

This talk is a revised and extended version of Internals of Familiar Unix Commands, aimed at a Perl-savvy audience rather than a general Unix/GNU/Linux audience. It is about the Unix process model, the semantics of the fork and exec calls, and how this impacts the design of certain well-known Unix commands such as the shell, ls, nice, sudo, nohup, inetd, less, chroot, and cd. There are some detailed examples of Unix system programming techniques in Perl.

Outline

Don't Touch That
Overview
Processes
The Shell
World's Smallest Shell
Why fork and exec?
File Descriptors
Redirection
World's Smallest Shell That Doesn't Completely Suck
But what if you do care?
Current directory
Environment Variables
Not Everything is Copied
Why Share File Pointers?
Signal Handling
stopafter
File Locks

Complete .tgz file of this talk

Related Talks

Original, shorter version of this talk

The previous year's talk about inodes

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