December 2018
Beginner
826 pages
22h 54m
English
Content preview from Linux Administration Cookbook
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CentOS
CentOS (and Red Hat) have two package managers, with another soon to be added to the equation.
Starting at the top, we have RPM Package Manager (RPM is a recursive acronym), which is the underpinning of package management in Red Hat based systems. It is what you might consider to be a raw package manager, in the sense that it is primordial, and you probably won't be using it directly day to day.
RPM does the following four things:
- Select
- Query
- Verify
- Install
These options have arguments, and the one that I find myself using the most often is query.
To list all installed packages on your system, use -qa, as follows:
$ rpm -qakernel-tools-libs-3.10.0-862.2.3.el7.x86_64grub2-common-2.02-0.65.el7.centos.2.noarchdmidecode-3.0-5.el7.x86_64 ...
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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.