🐧 Linux Essentials

📌 Introduction to Linux

• 📜 UNIX, Linux, and Open Source
• 🖥️ What is Linux?
• 📅 History and Evolution of Linux
• ⚙️ Understanding the Linux Kernel
• 🔑 Key Features of Linux
• 📦 Linux Distributions
• 📂 Directory Structure of Linux
• 💾 Linux Installation
• 🔐 Login Methods in Linux
• 🔄 Run Levels in Linux

🏗️ Linux Basic Commands

• 🗺️ Finding Your Way (ls, pwd, cd)
• 📁 Creating and Removing Directories and Files (mkdir, touch, rmdir, rm)
• 🔄 Copying, Moving, and Renaming Files and Directories
• 📜 Using the cat Command
• 📖 Using the less and more Commands
• ➡️ Pipes and Redirects
• 📦 Archiving and Compression
• 🗜️ Compression Tools (zip, gzip, bzip, tar, 7zip)
• 🎁 Archiving Tools
• 🔗 Symbolic Links
• ⚡ Shortcuts

✍️ Text Editors

• 📝 cat
• 🖊️ nano
• 🎨 vi / vim

🔍 String Processing and Finding Files

• 🔝 head
• 🔚 tail
• 🔢 wc
• 📑 sort
• ✂️ cut
• 🔗 paste
• 🔍 grep
• 📊 awk
• 🛠️ sed

🔎 Finding Files Commands:

• 🌳 tree
• 🔦 find
• ❓ which
• 📌 whereis

👥 Users, Groups, and Permissions

• 🖥️ Types of Shells
• 🏢 Users and Groups
• 📄 /etc/passwd File
• 🔐 /etc/shadow File
• 📂 /etc/group File
• 🔏 /etc/gshadow File
• ➕ Adding Users
• 🔄 Modifying User Accounts
• ❌ Deleting User Accounts
• 👥 Working with Groups
• 🛡️ Root Login
• 🔄 Sharing Superuser Privileges with others (su and sudo Commands)
• 🔀 Configuring sudo command
• 🔑 File Permissions
• 📂 Directory Permissions
• 🔄 Changing Permissions
• ⚙️ Setting Default Permissions
• 🏷️ SUID Bit
• 🏷️ SGID Bit
• 📌 Setting the Sticky Bit
• 🔐 ACL Permissions

📦 Package Management

• 📂 Overview of RPM and SRPM Packages
• 🏗️ Explanation of Different Architectures
• 🛠️ Installing Packages Using RPM
• 🌐 Understanding Repositories
  • 🏪 Types of Repositories
• 📥 Installing Packages Using yum

💾 File System & Disk Management

• 💿 Types of Disks
• 🛠️ parted Utility
• 🛠️ fdisk Utility
• 📂 Mounting a File System
• 📝 The /etc/fstab File
• 📊 Quota Management
• 🔄 SWAP (Partitions and Files)
• 🏗️ RAID Overview
  • ⚡ Uses of RAID
  • 📊 RAID Levels
• 🔍 Logical Volume Manager (LVM)

🌐 Network Configuration and Controlling Services

• 🌍 Network Configuration
• 🛠️ Network Tools
  • 🔄 traceroute
  • 🔄 tracepath
  • 📡 netstat
  • 📡 ss
• 🌐 Network Clients
  • 🔐 ssh
  • 📦 scp
  • 📂 ftp
  • 🌍 wget
• 🔄 rsync
• 📌 Checking the Status of Services
  • ✅ Is service active?
  • ✅ Is service enabled?
  • 📜 Listing the Active/Inactive State of Loaded Units
• 🔄 Starting, Restarting, and Stopping Services

📊 Process Management, and Monitoring Tools

📊 Job Management

• 🎛️ jobs, ps, htop

🦠 Installing & Configuring Antivirus Software

• 🔬 ClamAV
• 🛡️ LMD (Linux Malware Detect)

🏰 Firewalls

• 🚧 iptables
• 🔥 ufw (Uncomplicated Firewall)

📊 Process Management

🛠️ Monitoring Tools

• 📈 vmstat
• 📊 iostat
• 🔎 lsof
• 🌐 tcpdump

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🤝 Contributing

Feel free to fork this repository and contribute to the guide by submitting pull requests.

📜 License

This project is licensed under the MIT License.