🐧 Linux Commands

This repository contains a curated list of useful Linux commands and shell scripts for everyday use, system management, and automation.

🚀 Commands Included

1️⃣ Navigating Directories

• cd <directory>: Change to a specific directory.
• ls: List files and directories.
• pwd: Print the current working directory.
• mkdir <dir_name>: Create a new directory.

2️⃣ File Management

• cp <source> <destination>: Copy files or directories.
• mv <source> <destination>: Move or rename files.
• rm <file_name>: Remove files or directories.
• touch <file_name>: Create a new empty file.

3️⃣ File Viewing and Editing

• cat <file_name>: View the contents of a file.
• less <file_name>: View files one page at a time.
• nano <file_name>: Edit a file using the nano text editor.
• vim <file_name>: Edit a file using the Vim editor.

4️⃣ Search Commands

• grep <pattern> <file_name>: Search for a pattern within a file.
• find <directory> -name <file_name>: Search for a file by name.
• locate <file_name>: Locate a file quickly in the system.

5️⃣ Permissions and Ownership

• chmod <permissions> <file_name>: Change file permissions.
• chown <owner>:<group> <file_name>: Change file owner and group.

6️⃣ System Information

• top: Display running processes.
• df -h: Check disk space usage.
• free -m: Display memory usage.
• uname -a: Show system information.

7️⃣ Networking

• ping <hostname>: Check network connectivity.
• ifconfig: Display network interfaces and IP addresses.
• netstat -tuln: Display listening ports.
• curl <url>: Fetch data from a URL.

8️⃣ Process Management

• ps aux: Show currently running processes.
• kill <PID>: Kill a process by its PID.
• top: Monitor active processes in real-time.

9️⃣ Disk Management

• lsblk: List all block devices.
• mount <device> <directory>: Mount a file system.
• umount <device>: Unmount a file system.

🔟 Shell Scripting Examples

• Create a basic shell script to automate tasks like backups, system updates, or file management.

#!/bin/bash
# A simple script to back up a directory
tar -czvf backup.tar.gz /home/user/documents/