Linux Commands
What is pwd?
It is a command displays your current location within the Linux file system.
What is the default and most widely used file system format for Linux?
ext4
What is top?
This Linux command displays all running processes and updates in real time.
What is a Dock?
The Dock is a graphical toolbar, usually located at the bottom of the screen in macOS, that provides quick access to:
What is Time Machine?
Time Machine is the built-in backup and recovery tool in macOS. It automatically creates backups of your files, applications, and system settings so that you can restore them if they are lost, deleted, or damaged.
What are find and grep commands for?
These two commands are used in Linux to search: one finds files by name or attributes, and the other searches for strings inside a file.
What are chown and chmod?
In Linux, this command changes the ownership of a file or directory, while this other command changes or modifies its permissions.
What are apt and DNF (or yum)?
APT and DNF (or YUM) are package managers used in Linux. A package manager helps you install, update, remove, and manage software from repositories.
What are the Menu Bar and the Dock?
The Menu Bar is a horizontal bar, usually located at the top of the screen, that provides access to menus, commands, system settings, and application options.
What is FileVault?
FileVault is a security feature in macOS that encrypts the entire contents of a Mac's startup disk to protect data from unauthorized access.
What are cp and mv commands for?
This command is used to copy a file, while this other command moves or renames a file
What is /etc/shadow for?
This file stores encrypted passwords.
What are systemd and systemctl?
systemd is the system and service manager used by most modern Linux distributions.
systemctl is the command-line tool used to start service, stop service, restart services, check service status
What are /Users and Finder?
/Users is a directory (folder) in macOS that stores the home folders of all user accounts on the computer.
Each user has their own folder inside /Users, which contains their personal files and settings, such as: Documents, Downloads, Desktop files, Pictures, Music.
Finder is the file management application in macOS.
What is Rapid Security Response (RSR)?
Rapid Security Response (RSR) is a feature in macOS, iOS, and iPadOS that allows security fixes to be delivered quickly without waiting for a full operating system update.
This command runs a specified command with elevated (root-level) permissions, but only if the user's account is listed in a specific system file.
sudo
What are /etc/passwd
This Linux file contains user account information
What are apt update and apt upgrade?
The apt update command refreshes the package list from the software repositories.
The apt upgrade command installs the available updates for the packages already installed on your system.
What are CTRL and ALT?
The COMMAND key is equivalent to this Windows key, and the OPTION key is equivalent to this Windows key.
What is APFS?
APFS (Apple File System) is the modern file system developed by Apple for its devices, including macOS, iOS, iPadOS, watchOS, and tvOS.
What are 4, 2, and 1?
file permissions, octal mode assigns these numeric values to Read, Write, and Execute respectively.
What are useradd, usermod, and userdel?
These three Linux commands are used to add, modify, and delete user accounts from the command line.
What are repositories (repos)
A repository (repo) is a central online storage location that contains software packages and updates for a Linux distribution.