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All right, let's get started with the command line.

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So what is the command line and why do we need the command line as a back end developer?

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Perfect.

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The command line is used to interact with our operating system.

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The same way we use the mounts to do some operations, like deleting files, copying files and moving

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around the application.

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We can use the same command line to achieve the same concept, but instead the command line gives us

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super power, meaning the things that we cannot use the mouse to do.

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We can use the command line to achieve that.

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For example, if we want to know the internals of some hidden files in your operating system, we are

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going to use the command line to achieve that.

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So as you move on, we are going to use the command line to create folders and then to rename files

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to install packages and many more.

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So before we get into that, let's have a look at some of the confusing words when it comes to the command

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line or the terminal.

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And the first confusing word is what we call the terminal.

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You're going to hear this word a lot, determina, terminal and terminal.

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After that, we also hear this word called shell.

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And lastly, call the command line.

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These three terminologies are sometimes used interchangeably, so let's take them one by one or one

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after the other and see the differences between these terms.

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The first one is what we call the terminal.

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So what is the terminal?

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Determiner is a device that gives you access to the console of your computer, meaning the internals

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of your computer.

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So the terminal give you access to the console or the internals of your operating system.

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The next term is what we call the shell.

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So what is a shell?

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The shell is a program that runs in the terminal.

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So the terminal is a device that gives access to the console.

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So the program that runs in the terminal is what we call the shell.

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And this gift uses a command prompt.

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So popular shells include S-H, bash, Zsasz, fish, ash and C as H.

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So on Linux we have for this call bash.

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So the Shell is a program that runs in the terminal.

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And lastly is what is called the command line.

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The command line interface is any kind of interface that is used by entering test commands.

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An example is the terminal.

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Well, so the terminal is one of these, but some programs have their own command line interface.

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Example of the command line interface is what you see on the screen.

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You can see that for this one, I can issue command using text and a program that runs in the terminal

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is what you call the shell.

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All right.

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That is the command line for you.

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So we are going to spend my time by learning some of the commands that we can use to interact with application

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in the upcoming videos.