November 2017
Intermediate to advanced
1232 pages
36h 16m
English
book
A Practical Guide to Linux Commands, Editors, and Shell Programming, Fourth Edition
by Mark G. Sobell, Matthew Helmke
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Processes
A process is the execution of a command by the Linux kernel. The shell that starts when you log in is a process, like any other. When you specify the name of a utility as a command, you initiate a process. When you run a shell script, another shell process is started, and additional processes are created for each command in the script. Depending on how you invoke the shell script, the script is run either by the current shell or, more typically, by a subshell (child) of the current shell. Running a shell builtin, such as cd, does not start a new process.
Process Structure
fork() system call
Like the file structure, the process structure is hierarchical, with parents, children, and a root. A parent process forks (or spawns) a child process, ...
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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.
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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.