It 201 note 3.docx - As you study this section answer the...

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As you study this section, answer the following questions: Why do many administrators choose to use a command line interface on a Linux server? What is a Linux distribution? Which common commands are used to navigate through shells? What types of items can Tab be used to complete once you start typing the entities' name? What is the difference between free software and open-source software? In this section, you will learn to: Use shell commands Shut down a Linux system Key terms for this section include the following: Term Definition Linux An open source operating system. Distribution A custom version of Linux. Shell A command line interface. This section helps you prepare for the following certification exam objectives: Exam Objective TestOut PC Pro 2.2 Given a scenario, use operating system features and utilities 2.2.3 Use common Linux command line utilities CompTIA 220-1002 1.1 Compare and contrast common operating system types and their purposes. Workstation operating systems o Linux 1.9 Given a scenario, use features and tools of the Mac OS and Linux client/desktop operating systems. Tools o Shell/Terminal Basic Linux commands o iwconfig/ifconfig
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o su/sudo o ls o pwd vs. passwd o cd o mv o rm o cp o dd o shutdown 4.8 Identify the basics of scripting. Environment variables Linux is an open source operating system. You can even create your own custom version of Linux called a distribution . Some of the more popular Linux distributions include openSUSE, Fedora, and Ubuntu. Like Windows, Linux provides two different user interfaces. There is a a graphical interface where you can click on things with a mouse and make selections to bring up applications. There is also a command line interface called the shell that allows you to enter commands at the shell prompt to manage the system. The command line interface is consistent across all distributions of Linux. Each Linux distribution uses a slightly different graphical user interface. If you learn how to manage Linux systems from within a shell, then you can manage just about any Linux distribution. The shell is often referred to as the bash (Bourne-again shell) shell. A superuser in Linux is equivalent to an administrator in Windows. Linux has two especially important features, command history and command completion. Command history saves commands entered at the shell prompt. The command completion feature tries to guess a command you are entering and will complete the command for you if you press the TAB key. Use the shell commands listed in the following table to manage the file system on Linux. Command Description pwd Displays the path of the current directory on the screen. pwd stands for print working directory.
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