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Hello everyone.

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In this demo, I'm going to show you how to use history command.

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Clear Command and exit command to show the history in the terminal session.

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We type the command history.

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So as we can see here, the history command keeps a list of all the commands that have been used from

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the terminal session.

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And also it allows us to replay or to reuse these commands.

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Instance of retyping them.

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If I would like to tell the shell to return.

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The command on the line of the history.

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For example, this line I'm going to type exclamation mark.

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Then the number of this line 87.

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Then I hit enter.

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So you can see here this is the output of the line 87.

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Now, if if I would like to delete a particular command, I'm going to type history.

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Then dash D, then I'm going to pick a number here.

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For example, I'm going to pick 96.

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Let's clear the screen.

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I'm going to type history right now.

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As we can see here, we don't have that command anymore.

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Now if I would like to delete the entire.

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Occur the entire contents of the history file.

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So I'm going to type history then.

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Dash C.

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Clear, then I'm going to type history again.

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So I just have the last two types.

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I just type them at the end.

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Now, if I would like to clear the screen.

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Or the chairman session.

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I'm going to try.

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Clear.

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If I would like to exit the terminal, for example, I'm going to log in as a root user.

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Now I will just look in as a root user.

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Now, if I would like to exit, I'm going to type exit.

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As you can see here, if you would like to get more information about the history command, we can go

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to the man page man history.

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The same thing.

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If you would like to get more information about the clear, go to the man page.

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Clear the terminal screen.

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Now, if I would like to get also more information about the exit, we can go to the main page of the

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exit command.

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Also, there is another thing if I would like to exit.

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The terminal.

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So now I'm a root user.

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So I hit or I type exit.

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Then I hit enter.

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As we can see here, we close the terminal.

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That's it for this session.

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Thank you and see you in the next lesson.