The terminal

`ls`	Listing the contents of a directory, including hidden files (`ls -a`), displaying details (`ls -l`), or combining both (`ls -la`).
`pwd`	Displaying the current working directory.
`cd <dir_name>`	Changing the current directory, navigating to root (`cd /`).
`mkdir <dir_name>`	Creating a new directory.
`rmdir <dir_name>`	Removing an empty directory.
`rm <file_name>`	Removing files, and recursively removing directories with all contents (`rm -rf <dir_name>`).
`cp <source> <destination>`	Copying files or directories to a new location.
`mv <source> <destination>`	Moving or renaming files and directories.
`touch <file_name>`	Creating an empty file or updating its timestamp.
`nano <file_name>`	Opening a file in Nano editor, editing its content, creating if not exists, saving with `CTRL + S`, exiting with `CTRL + X`.
`cat <file_name>`	Displaying the content of a file.
`echo <text>`	Displaying text or variables in the terminal.
`chmod <permissions> <file>`	Changing file permissions.
`chown <user> <file>`	Changing file ownership.
`ps`	Displaying currently running processes.
`top`	Displaying real-time system processes and resource usage.
`grep <pattern> <file>`	Searching for a pattern in files or output.
`find <path> -name <name>`	Searching for files and directories in a directory hierarchy.
`df -h`	Displaying disk space usage in human-readable format.
`du -h <file/dir>`	Displaying disk usage of files or directories in human-readable format.
`man <command>`	Displaying the manual of a command.
`sudo <command>`	Executing a command with superuser privileges (admin).
`ifconfig`	Displaying or configuring network interfaces (deprecated, use `ip` instead).
`apt-get install <package>`	Installing software packages in Debian-based systems.
`apt-get remove <package>`	Removing software packages.
`apt-get update`	Updating package sources to latest versions.
`apt-get upgrade`	Upgrading installed packages to the latest version.
`pip3 install <module>`	Installing a Python module.
`pip3 uninstall <module>`	Uninstalling a Python module.
`pip3 list`	Listing installed Python modules.
`pip3 list \| grep <text>`	Searching for a module by name in the installed list.
`python3`	Opening the Python3 interactive shell (use `exit()` to leave).
`python3 <file.py>`	Executing a Python3 script.
`shutdown`	Shutting down the system.
`reboot`	Rebooting the system.
`hostname -I`	Displaying the system IP address.
`crontab -e`	Editing scheduled tasks, managing recurring jobs.