View source for Linux System Administration for Programmers

{{Chris Tyler Draft}}
This is a topic outline for the upcoming "System Administration for Programmers" session.

Basics:
* Assume a RHEL/CentOS/Fedora context

== Bash (or, "How To Save Hours of Your Life on the Command Line") ==

* Bash tips 'n' tricks
** Command editing
*** ^Right, ^Left, Home, ^A, End, ^E, ^T
*** Esc-BS, Ctl-W
*** Esc-_
** Command searching
*** ^R
*** !
** Tab completion
*** Non-file tab completion
** Prompts
** Aliases
** cd shortcuts: using - and ~
** Startup Scripts - .bashrc, .profile, etc
** Environment Variables - especially PATH
* One-Line Scripting
** Looping on the command line

== SSH (or, "Remote Access made Easy and Secure") ==

* [[SSH]] tips and tricks
** X tunneling
** arbitrary forward and reverse tunnels
** Using <code>.ssh/config</code> for convenience
** Public key authentication
*** Use of passphrases
*** ssh-agent (and gnome ssh agent, ...)
* Securing SSH
** Preventing direct root login

== Screen (or, "How to Start a Build at the End of the Day") ==

* GNU [[Screen]] command
** Common options

== X11 (or, "Why the Linux GUI Rocks and No One Knows") ==

* Remote access
* Clipboard vs. Selection
* Fast-paste (middle mouse)
* Composed desktops
* Virtual desktops

== Using Root (or, "No Power in the 'Verse Can Stop Me") ==

* Via sudo
* Via su
* Directly (don't do it!)
* Dangers

== Services ==
* Systemd
** enable and disable
** start and stop
** status
** isolate
** set default

== Firewalls ==
* firewalld
* iptables

== Networking ==
* ip vs. ifconfig
== Installing and Removing Software (or, "That Software is only a Yum Away") ==

On an RPM-based system
* Why use a package manager
* Yum/DNF basics
** <code>list, search, info</code>
** <code>install, remove</code>
* <code>rpm -q</code> basics
** package selection: <code>''name'' -a -f --whatrequires --whatprovides</code>
** info selection: <code>''default'' -i -l --requires --provides --scripts --qf</code>
* repoquery basics (?)
* apt-get basics (As needed)

== LVM (or, "Why Running out of Disk Space is No Big Deal" or "Snapshots, Volumes, and Disk Errors, Oh My!") ==

* Using LVM for storage management
** Why?
** Concepts: PVs, VGs, LVs
** <code>pvs, vgs, lvs</code>
** <code>vgextend</code>
** <code>lvextend -r</code>
** <code>pvmove</code>
** LV snapshots