Linux

Where to Move

Move chapter:

• ☰ 1 PART I — Linux Fundamentals (Beginner)
  • ☰ 1.1 What Is Linux?
    • ☰ 1.1.1 What is an operating system
    • ☰ 1.1.2 History of Unix and Linux
    • ☰ 1.1.3 The Linux kernel
    • ☰ 1.1.4 GNU and the Free Software Foundation
    • ☰ 1.1.5 Open source philosophy
    • ☰ 1.1.6 Where Linux is used today
    • ☰ 1.1.7 Desktop vs server vs embedded Linux
  • ☰ 1.2 Choosing a Linux Distribution
    • ☰ 1.2.1 What is a distribution?
    • ☰ 1.2.2 Package formats (deb, rpm, pacman)
    • ☰ 1.2.3 Popular distributions
      • ☰ 1.2.3.1 Ubuntu
      • ☰ 1.2.3.2 Debian
      • ☰ 1.2.3.3 Fedora
      • ☰ 1.2.3.4 Arch Linux
      • ☰ 1.2.3.5 openSUSE
    • ☰ 1.2.4 Rolling vs fixed release
    • ☰ 1.2.5 Choosing the right distribution
  • ☰ 1.3 Installing Linux
    • ☰ 1.3.1 Creating a bootable USB
    • ☰ 1.3.2 Installing on real hardware
    • ☰ 1.3.3 Dual booting with Windows
    • ☰ 1.3.4 Installing in a virtual machine
    • ☰ 1.3.5 Partitioning
      • ☰ 1.3.5.1 `/` (root)
      • ☰ 1.3.5.2 `/home`
      • ☰ 1.3.5.3 Swap
    • ☰ 1.3.6 First-time setup
  • ☰ 1.4 First Steps After Installation
    • ☰ 1.4.1 Desktop environment basics
    • ☰ 1.4.2 Updating the system
    • ☰ 1.4.3 Installing essential tools
    • ☰ 1.4.4 Setting up drivers
    • ☰ 1.4.5 Using the software center
  • ☰ 1.5 Linux Filesystem Hierarchy
    • ☰ 1.5.1 Overview of the root filesystem
    • ☰ 1.5.2 Important directories
      • ☰ 1.5.2.1 `/etc`
      • ☰ 1.5.2.2 `/var`
      • ☰ 1.5.2.3 `/usr`
      • ☰ 1.5.2.4 `/tmp`
      • ☰ 1.5.2.5 `/dev`
      • ☰ 1.5.2.6 `/proc`
      • ☰ 1.5.2.7 `/sys`
    • ☰ 1.5.3 File types
    • ☰ 1.5.4 Absolute vs relative paths
  • ☰ 1.6 The Linux Graphical Environment
    • ☰ 1.6.1 GNOME
    • ☰ 1.6.2 KDE Plasma
    • ☰ 1.6.3 XFCE
    • ☰ 1.6.4 File managers
    • ☰ 1.6.5 System settings
    • ☰ 1.6.6 Workspaces and window management
• ☰ 2 PART II — Command Line Essentials
  • ☰ 2.1 Terminal and Shell Basics
    • ☰ 2.1.1 What is a shell?
    • ☰ 2.1.2 Bash vs Zsh vs Fish
    • ☰ 2.1.3 Command structure
    • ☰ 2.1.4 Environment variables
    • ☰ 2.1.5 Getting help
    • ☰ 2.1.6 Command history and autocomplete
  • ☰ 2.2 Files and Directories
    • ☰ 2.2.1 Listing files
    • ☰ 2.2.2 Navigating directories
    • ☰ 2.2.3 File operations
    • ☰ 2.2.4 Wildcards and globbing
    • ☰ 2.2.5 Searching files
  • ☰ 2.3 Viewing and Editing Text Files
    • ☰ 2.3.1 Viewing tools
    • ☰ 2.3.2 Editing with nano
    • ☰ 2.3.3 Introduction to vim
    • ☰ 2.3.4 Input/output redirection
  • ☰ 2.4 Users, Permissions, and Ownership
    • ☰ 2.4.1 Users and groups
    • ☰ 2.4.2 Permission types (r, w, x)
    • ☰ 2.4.3 Changing permissions
    • ☰ 2.4.4 Changing ownership
    • ☰ 2.4.5 Using sudo
  • ☰ 2.5 Package Management
    • ☰ 2.5.1 Software repositories
    • ☰ 2.5.2 APT (Debian/Ubuntu)
    • ☰ 2.5.3 DNF (Fedora/RHEL)
    • ☰ 2.5.4 Pacman (Arch Linux)
    • ☰ 2.5.5 Snap, Flatpak, AppImage
    • ☰ 2.5.6 System upgrades
  • ☰ 2.6 Working with Processes
    • ☰ 2.6.1 What is a process?
    • ☰ 2.6.2 Viewing processes
    • ☰ 2.6.3 Killing processes
    • ☰ 2.6.4 Foreground and background jobs
    • ☰ 2.6.5 System services and daemons
  • ☰ 2.7 Introduction to Shell Scripting
    • ☰ 2.7.1 Writing your first script
    • ☰ 2.7.2 Variables
    • ☰ 2.7.3 Conditionals
    • ☰ 2.7.4 Loops
    • ☰ 2.7.5 Functions
    • ☰ 2.7.6 Making scripts executable
• ☰ 3 PART III — Intermediate System Administration
  • ☰ 3.1 Systemd and Service Management
    • ☰ 3.1.1 What is systemd?
    • ☰ 3.1.2 Managing services (systemctl)
    • ☰ 3.1.3 Boot targets
    • ☰ 3.1.4 System logs (journalctl)
    • ☰ 3.1.5 Creating custom services
  • ☰ 3.2 Storage and Filesystems
    • ☰ 3.2.1 Devices and partitions
    • ☰ 3.2.2 Filesystems (EXT4, XFS, Btrfs)
    • ☰ 3.2.3 Mounting and unmounting
    • ☰ 3.2.4 Disk usage tools
    • ☰ 3.2.5 Archiving and compression (tar, gzip, xz)
  • ☰ 3.3 Networking Fundamentals
    • ☰ 3.3.1 IP addressing
    • ☰ 3.3.2 Subnets and routing
    • ☰ 3.3.3 DNS and hostnames
    • ☰ 3.3.4 Networking tools (ip, ss, ping)
    • ☰ 3.3.5 Editing network configuration files
  • ☰ 3.4 User and Group Administration
    • ☰ 3.4.1 User information files
    • ☰ 3.4.2 Creating and removing users
    • ☰ 3.4.3 Password policies
    • ☰ 3.4.4 Managing groups
    • ☰ 3.4.5 Shell configuration
  • ☰ 3.5 System Monitoring
    • ☰ 3.5.1 CPU and memory monitoring
    • ☰ 3.5.2 Disk and I/O monitoring
    • ☰ 3.5.3 Log files in /var/log
    • ☰ 3.5.4 Boot performance
    • ☰ 3.5.5 Monitoring running services
  • ☰ 3.6 Backup and Restore
    • ☰ 3.6.1 Backup strategies
    • ☰ 3.6.2 Using rsync
    • ☰ 3.6.3 Creating tar archives
    • ☰ 3.6.4 Using snapshot systems
    • ☰ 3.6.5 Automating backups
  • ☰ 3.7 Basic System Security
    • ☰ 3.7.1 Firewalls (UFW, firewalld)
    • ☰ 3.7.2 Authentication policies
    • ☰ 3.7.3 SSH security basics
    • ☰ 3.7.4 SELinux and AppArmor overview
    • ☰ 3.7.5 Intrusion detection basics
• ☰ 4 PART IV — Advanced Linux Skills
  • ☰ 4.1 Advanced Shell Scripting
    • ☰ 4.1.1 Script structure
    • ☰ 4.1.2 Error handling
    • ☰ 4.1.3 Debugging scripts
    • ☰ 4.1.4 Scheduled tasks (cron)
  • ☰ 4.2 The Linux Boot Process
    • ☰ 4.2.1 BIOS vs UEFI
    • ☰ 4.2.2 Understanding GRUB2
    • ☰ 4.2.3 Kernel loading
    • ☰ 4.2.4 initramfs
    • ☰ 4.2.5 Troubleshooting boot issues
  • ☰ 4.3 Kernel Management
    • ☰ 4.3.1 What is the kernel?
    • ☰ 4.3.2 Kernel modules
    • ☰ 4.3.3 Kernel parameters
    • ☰ 4.3.4 Compiling a custom kernel
    • ☰ 4.3.5 Kernel versioning and updates
  • ☰ 4.4 Advanced Filesystems and Storage
    • ☰ 4.4.1 LVM concepts
    • ☰ 4.4.2 Logical volumes
    • ☰ 4.4.3 RAID levels
    • ☰ 4.4.4 Full disk encryption (LUKS)
    • ☰ 4.4.5 Snapshots and rollbacks
  • ☰ 4.5 Network Services
    • ☰ 4.5.1 SSH server configuration
    • ☰ 4.5.2 NFS
    • ☰ 4.5.3 Samba
    • ☰ 4.5.4 FTP/SFTP
    • ☰ 4.5.5 Firewalls in depth
  • ☰ 4.6 Logging and Auditing
    • ☰ 4.6.1 Systemd logging
    • ☰ 4.6.2 Traditional logs in /var/log
    • ☰ 4.6.3 Auditd
    • ☰ 4.6.4 Log rotation
    • ☰ 4.6.5 Creating custom logs
  • ☰ 4.7 Virtualization and Containers
    • ☰ 4.7.1 Virtual machines (KVM/QEMU)
    • ☰ 4.7.2 Linux containers (LXC/LXD)
    • ☰ 4.7.3 Docker fundamentals
    • ☰ 4.7.4 Podman vs Docker
    • ☰ 4.7.5 Container networking
• ☰ 5 PART V — Server Administration (Expert)
  • ☰ 5.1 Web Servers
    • ☰ 5.1.1 Apache basics
    • ☰ 5.1.2 Nginx basics
    • ☰ 5.1.3 Virtual hosts
    • ☰ 5.1.4 SSL/HTTPS
    • ☰ 5.1.5 Reverse proxy concepts
  • ☰ 5.2 Database Servers
    • ☰ 5.2.1 MySQL/MariaDB
    • ☰ 5.2.2 PostgreSQL
    • ☰ 5.2.3 Database backup strategies
    • ☰ 5.2.4 Database hardening
  • ☰ 5.3 Email Services
    • ☰ 5.3.1 SMTP fundamentals
    • ☰ 5.3.2 Configuring Postfix
    • ☰ 5.3.3 IMAP/POP3 with Dovecot
    • ☰ 5.3.4 Spam filtering systems
    • ☰ 5.3.5 Email routing concepts
  • ☰ 5.4 DNS and DHCP
    • ☰ 5.4.1 Understanding DNS
    • ☰ 5.4.2 Setting up BIND
    • ☰ 5.4.3 DNS zones and records
    • ☰ 5.4.4 DHCP server configuration
    • ☰ 5.4.5 DNS troubleshooting
  • ☰ 5.5 Load Balancing
    • ☰ 5.5.1 HAProxy fundamentals
    • ☰ 5.5.2 Nginx as a load balancer
    • ☰ 5.5.3 Session persistence
    • ☰ 5.5.4 High availability concepts
  • ☰ 5.6 Clustering and High Availability
    • ☰ 5.6.1 Failover principles
    • ☰ 5.6.2 Pacemaker
    • ☰ 5.6.3 Corosync
    • ☰ 5.6.4 Cluster resource management
    • ☰ 5.6.5 Distributed filesystems
• ☰ 6 PART VI — DevOps and Cloud
  • ☰ 6.1 Linux for Developers
    • ☰ 6.1.1 Compiler toolchains (gcc, make)
    • ☰ 6.1.2 Git fundamentals
    • ☰ 6.1.3 Debugging tools (gdb, strace)
    • ☰ 6.1.4 Build automation (Makefile, CMake)
  • ☰ 6.2 DevOps on Linux
    • ☰ 6.2.1 CI/CD principles
    • ☰ 6.2.2 YAML basics
    • ☰ 6.2.3 GitHub Actions
    • ☰ 6.2.4 GitLab CI/CD
    • ☰ 6.2.5 Automated testing
  • ☰ 6.3 Configuration Management
    • ☰ 6.3.1 Ansible basics
    • ☰ 6.3.2 Playbooks and inventories
    • ☰ 6.3.3 Puppet overview
    • ☰ 6.3.4 Chef overview
  • ☰ 6.4 Infrastructure as Code
    • ☰ 6.4.1 Terraform fundamentals
    • ☰ 6.4.2 Providers and resources
    • ☰ 6.4.3 Modules
    • ☰ 6.4.4 Cloud provisioning with Terraform
  • ☰ 6.5 Cloud Computing with Linux
    • ☰ 6.5.1 Linux on AWS
    • ☰ 6.5.2 Linux on Azure
    • ☰ 6.5.3 Linux on GCP
    • ☰ 6.5.4 Cloud networking basics
    • ☰ 6.5.5 Scaling and monitoring
• ☰ 7 PART VII — Master Topics
  • ☰ 7.1 Hardening a Linux System
    • ☰ 7.1.1 Hardening principles
    • ☰ 7.1.2 Kernel hardening
    • ☰ 7.1.3 File integrity monitoring
    • ☰ 7.1.4 Vulnerability scanning
  • ☰ 7.2 Forensics and Incident Response
    • ☰ 7.2.1 Collecting evidence
    • ☰ 7.2.2 Log and file recovery
    • ☰ 7.2.3 Analyzing suspicious processes
    • ☰ 7.2.4 Incident response workflow
  • ☰ 7.3 Performance Tuning
    • ☰ 7.3.1 CPU tuning
    • ☰ 7.3.2 Memory tuning
    • ☰ 7.3.3 Disk and I/O optimization
    • ☰ 7.3.4 Profiling tools
  • ☰ 7.4 Writing Linux Tools
    • ☰ 7.4.1 Bash-based tools
    • ☰ 7.4.2 Python command-line tools
    • ☰ 7.4.3 Writing tools in C
    • ☰ 7.4.4 Using Linux system APIs
  • ☰ 7.5 Linux Internals
    • ☰ 7.5.1 Process lifecycle
    • ☰ 7.5.2 Memory management
    • ☰ 7.5.3 Signals and IPC
    • ☰ 7.5.4 Namespaces
    • ☰ 7.5.5 cgroups
  • ☰ 7.6 Becoming a Linux Expert
    • ☰ 7.6.1 Career paths
    • ☰ 7.6.2 Certifications (RHCE, LFCS, LPIC)
    • ☰ 7.6.3 Building a homelab
    • ☰ 7.6.4 Contributing to open source