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DataBook® for Linux
Linux Technical Data
Main menu
Skip to content
About
About me
Legal
GNU Free Documentation License
Glossary
Bibliography
Decimal Naming and Prefixes
Contact
A bit of history
A little hardware history
A Little History of Linux
The Unix and Linux Philosophy
The Linux Philosophy for SysAdmins
Data Streams
Everything is a File – A Critical Concept
Linux Philosophy Saves the Day – Automate Everything!
The Linux Philosophy — Oregon State University
The real reason we use Linux
What is an Operating System
Definition of an Operating System
Genesis of the Operating System
Operating System Functions
DataBook for Linux Administrators
Fedora and Red Hat Documentation
Installation
Creating and Using Live Images
Creating a live Fedora USB image from the command line
Write Protect Errors Creating Bootable USB Thumb Drives
Creating USB Drive Install Image for Fedora
Making a Bootable USB Thumb Drive For Installation
Using the New Anaconda Installer in Fedora 18 and Above
Errors During Fedora Linux DVD Installation
Hardware Compatibility
BIOS Upgrades with FreeDOS
Testing hardware compatibility with Linux using Live USB memory sticks
nVidia vs ATI/Radeon Video
Video Hardware
Getting Linux to Run on Intel DG33FB Motherboard
Intel DP35DP Motherboard And Fedora
Beware of Foxconn Motherboards
Software RAID
Configuring Software RAID1 Arrays in Linux
Failing and Removing a Device From a RAID 1 Array in Linux
Default Partitioning and Disk Layout During Installation
Advanced Partitioning and Disk Layout During Installation
Kickstart
Complete Kickstart
Sample Linux Installation Procedures
Installing Fedora Linux 15 Through 17
Installing Fedora Linux 18
Fedora 15 through 18 Post Installation
Installing Fedora Linux 19
Post-Installation Problems
SSH and YUM don’t work after Fedora 10 Installation
Upgrades
Upgrade Fedora with dnf system-upgrade – Fedora 22 and above
Upgrades with fedup – not so much!
Upgrades with preupgrade
Migrating to Linux
Creating a Default KDE Desktop for New Accounts
Migrating Microsoft Contacts to Thunderbird
Importing Local Folders From Microsoft Mail into Thunderbird
Bootup and Linux startup
The Linux Boot Process
BIOS POST
GRUB
Configuring GRUB
Using the GRUB Menu to Alter the Boot Sequence
Kernel Boot Parameters
Kernel Initialization
GRUB2
Configuring GRUB2
Startup Using SystemV Init Scripts
The startup process using systemd
Starting and Managing Linux Services Using systemd
Booting older kernels
Setting the host name
Filesystems
Anatomy of a Disk Drive
Disk Drive Types
The Linux Kernel and HDD Types
Introduction to Linux Filesystems
Linux Filesystem Hierarchical Standard
Understanding the /dev directory
The Linux Extended Filesystems
EXT2 Filesystem
The Linux EXT4 filesystem
Using hard and soft links in the Linux filesystem
Logical Volume Manager – LVM
LVM Structure
Creating a new Volume Group and Logical Volume
Resizing a Logical Volume in an LVM Filesystem
Changing the name of a Volume Group
Using the Loopback devices
File Permissions
Managing Cruft in tmp directories
Converting to SSD
Swap space on Linux Systems
Using Zram for Swap
Adding more swap space
The Command Line Interface (CLI)
Using Screen
How to use GNU screen as a teaching tool
Using Virtual Consoles
Tilix – Extreme Terminal Emulation
The GNU Core Utilities
Pipe Dreams
Fedora 16 crontab Problem
Setting vi Mode for Command Line Editing
Series: Learning Bash and How to Program It
Programming Bash: Getting Started
Programming Bash: Logical Operators
Programming Bash: Loops
Automation With Bash Scripts: Getting Started
Automation With Bash Scripts: Creating a template
Automation With Bash Scripts: Bash Program Needs Help
Automation With Bash Scripts: Initialization and sanity testing
System Tools
Glances for Monitoring Your Linux hosts
My First Day with Ansible
The /proc filesystem
Setting Colors in vim
Colors in Midnight Commander
The date Command
System Administration
Real SysAdmins don’t sudo
Using sudo to delegate
Everything is a File
Introducing regular expressions
About UDEV
Scheduling tasks with cron
Serial Console Usage
Performance Tuning
Removing kactivitymanagerd
KDE — How to disable Nepomuk, Strigi, Baloo and Akonadi
Removing ModemManager
When to reboot a Linux computer
Linux Standards and Best Practices
Software Updates
How to Disable PackageKit
How to Fix VirtualBox Errors after Linux Version Upgrades
Networking
Using SSH for access to remote hosts
DHCPD and HTTPD services do not start
BIND and Named – Name Services
Introduction to the Domain Name System (DNS)
Set up a DNS server using BIND
DNS secondary server does not update
DNS Problems in Fedora 12 and 13
Network Manager
Disable NetworkManager
Network Configuration
CIDR – Network notation and configuration
How to Disable IPV6
Introduction to Network Routing
Making your Linux Box Into a Router
Configuring Network Interface Controllers (NIC)
Networking Problems
Name services (DNS) resolver borked after upgrading to Fedora 33
Intel e1000e link speed only 100Mb rather than 1000Mb
Resetting Stale NFS Handles in Linux
Network Interface Card (NIC) name assignments
Printing
Printing Booklets using LibreOffice Writer
Printing Problems After Upgrade from Fedora 10 to 11
Printer Won’t Print After Going Into Sleep Mode
Printing With a Xerox WorkCenter Pro 128
Printing with the Dell V505 All-In-One Printer
Lexmark Printers Not Supported in Linux
USB Hardware Printing Problems
The X Window System
Installing System Fonts Using the Command Line
The Display Manager
xorg.conf Not Created in Fedora 14
Linux Desktops
The Xfce Desktop
Remote configuration of Xfce4
Security
Generating passwords
Firewalls
New Firewall – firewalld
Reverting to IPTables from firewalld
Blocking Brute Force SSH Attacks
shred – Deleting Files Securely
Backups and Disaster Recovery
The Backup Plan
Using tar and ssh for backups
Using rsync for Backup
Scripting Languages
BASH Code to Determine Valid IP Addresses
The awk Language
Apache Web Server
Basic Apache Web Server Configuration
Configuring multiple web sites with Apache
Configuration changes in Apache 2.4
Email
Migrate Thunderbird Config from one Linux Computer to Another
Configuring the Alpine email client
Sorting Email – Using SpamAssassin, MimeDefang and Procmail
sendmail
SendMail Error Message: 553 5.1.8 … Domain of sender address … does not exist
Outbound Authentication for Sendmail
Forwarding Email from Hosts with no DNS Entries
Using port forwarding when ISP’s block port 25 for outbound email
Can’t connect on IMAP to receive email on mobile devices – Server busy error
Troubleshooting
The Five Steps of Problem Solving
Knowledge
Observation
Deduction
Action
Testing
Troubleshooting Example
Important First Steps in Solving Problems
Problem Determination Tools
Open source tools for monitoring your Linux system
Temperature monitoring tools to keep your Linux computer cool
top
Diagnosing CPU and memory related performance problems
Priorities, Nice Numbers and How to Use Them
Environmental Problems – EMI
EMI Sources
EMI – Radio and TV
EMI – Radar and Microwave
EMI – Static Electricity
EMI – Electrical Noise
EMI – Engines
EMI – Magnetic Fields
EMI Problems – Bothering your Neighbors
How to Minimize EMI Problems
Specific Problems
TigerVNC viewer blank
Cannot Login Using GUI – 1
Cannot Login Using GUI – 2
Copy and Paste fails on LXDE and Xfce desktops
Horizontal Bar in Display
Xterm Windows Freeze Up in VNC Session
Fedora 10 – Network Only Works Outbound
User unable to login to XFCE desktop
Compiling the Kernel
Using Multiple Threads When Compiling the Kernel
Applications
Multimedia
Fix OBS Studio frame rate issues
ChurchInfo
ChurchInfo: Fatal Error: $_SESSION[‘sURLPath’] is empty
Installing ChurchInfo
ChurchInfo: Empty pages
WordPress
WordPress xmlrpc.php vulnerability
VirtualBox
VirtualBox VMs Very Slow
Installing VirtualBox Using the RPMFusion Repository
Sharing Virtual Machines on a Single VirtualBox Host
Making USB Work in VirtualBox Guests
Setting User Interface Fonts for Firefox and Thunderbird
Multimedia
Troubleshooting Audio Adapter Problems
Downloads
News and Reviews
VirtualBox – Free and Easy Virtualization
Humor
Joke collection
Blinkenlights
The Gospel of Tux (v1.0)
The ABC’s of Unix
The Perfect Programmer
Archives
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