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-# Header
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+# Linux Basics
+
+This guide provides a brief introduction to Linux, including basic commands and concepts.
+
+## Navigating the filesystem
+
+- Change a directory: `cd <directory>`
+- List files in a directory: `ls`
+- List files in a directory (including hidden files): `ls -a`
+- Getting the current directory: `pwd`
+- Going back a directory: `cd ..`
+
+## Managing Files and Directories
+
+- Create a new directory: `mkdir <directory>`
+- Create a new file: `touch <file>`
+- Copy a file: `cp <file> <new-file>`
+- Remove a file: `rm <file>`
+- Remove a directory: `rm -r <directory>`
+
+## File Permissions
+
+- Change file permissions: `chmod <permissions> <file>`
+- Change file ownership: `chown <user> <file>`
+- Change file ownership (recursively): `chown -R <user> <directory>`
+- View file permissions: `ls -l <file>`
+
+## Text Processing
+
+- View a file: `cat <file>`
+- View a file (with line numbers): `cat -n <file>`
+- Get the beginning of a file: `head <file>`
+- Get the end of a file: `tail <file>`
+
+## Package Management (Ubuntu)
+
+- Update package lists: `sudo apt update`
+- Install a package: `sudo apt install <package>`
+- Purge a package: `sudo apt purge <package>`
+- Remove a package: `sudo apt remove <package>`
+- Search for a package: `apt search <package>`
+- Upgrade packages: `sudo apt upgrade`
+
+## File Compression and Archiving
+
+- Create a tar archive: `tar -cvf <archive.tar> <file>`
+- Extract a tar archive: `tar -xvf <archive.tar>`
+- Create a zip archive: `zip <archive.zip> <file>`
+- Extract a zip archive: `unzip <archive.zip>`