In this chapter, the emphasis will be on using the software from a Unix-like shell. 3.2.5 Source Layer Caveats and Capabilities.3.2.4 A note on the -fps per-source argument.3.2.2 Dual Image Sequences and/or Movie Files as Stereo.3.2.1 Associating Audio with Image Sequences or Movie Files.3.2 Source Layers from the Command Line.ls: This command `lists all files in the current directory in alphabetical order, arranged neatly into columns.Chapter 3 - Command Line Usage Table of Contents.In these tutorials, subsequent lines that follow a prompt and do not start with $ are the output of the command. When typing commands, either from these tutorials or from other sources, do not type the dollar sign only the commands that follow it. The dollar sign is a prompt, that shows you that Bash is waiting for input your shell may use a different character as a prompt and may add information before the prompt. Linux: Default is usually Bash, if not, type Bash in the terminal. For the rest of this course, even if you are on Windows, we will refer to the Terminal. Windows: Git Bash came with your download of Git for Windows. OS X: The Bash program is called Terminal. How you access Bash will depend on your operating system. Common tasks that you can run at the command line include checking your current working directory, changing directories, making a new directory, extracting files, and finding files on your computer. You will also be able to perform many tasks more efficiently. GUIs and command line Bash are complementary - by knowing both, you will greatly expand the range of tasks you can accomplish with your computer. Using Bash in the Terminal is a powerful way of interacting with your computer. Why Use the Terminal? Interact With Your Computer and Organize Files For Windows users, this terminal can be accessed using a tool like Git Bash. However, on a Windows machine, you will have to install a new program to access Bash - like Git Bash, which we will use in this course.įor the rest of this course, we will refer to the command line environment that you use to access Bash as the terminal. There are many different terminal programs, and thus, the terminal program that you use on your computer will vary according to your operating system.įor instance, Mac computers have a terminal program already installed that provides access to Bash. What is a Terminal?Ī terminal is the command line interface (CLI) that gives you access to Bash. You access Bash using a terminal program which we will discuss next. Sometimes you will hear Bash and Shell used interchangeably in this course, we will use the term Bash. Throughout this class, you will use Python and Jupyter Notebook.īash stands for “bourne again shell” and is an updated version of Shell. You can also write and execute scripts in Bash just like you can in R or Python.įinally, you can use Bash to launch tools like Python, R and Jupyter Notebook. In Bash, you can perform multiple operations on multiple files quickly. Working with files at the command line is faster and more efficient than working with files in a graphic environment like Windows Explorer or Mac Finder. This allows you to control your computer by typing in commands entered with a keyboard, instead of using buttons or drop down menus in a graphical user interface (GUI) with a mouse/keyboard.įor example, you can use Bash to access and process files at the command line. The command line or terminal is where you provide Bash commands that the computer then executes. About Bashīash is command line program that allows you to efficiently perform many tasks. In this lesson, you will learn how to use a command line interface (CLI) or terminal on your computer. However, we still need to access the command line or terminal for certain tasks. Today, we have computers that can both provide commands AND perform the computation, and these computers have graphic interfaces (known as GUIs) that make it easy to perform tasks.
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