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Hello and welcome in this chair.

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I am going to briefly show you how to clear the interactive Ruby screen depending on the computer or

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operating system you have.

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If you are on a Windows the best way to clear the interactive Rubis screen is by typing system and then

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in person.

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This is you type in thing else.

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He must enclose this here live in quotes.

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If you are on a Mac there is the very things you can try contri type in in clear and press enter.

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If that doesn't work you can try typing in thiam the plus L..

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That doesn't work.

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Try control and L..

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In lower case.

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So those are the options that should work for a Mac.

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If you want to exit the interactive Ruby screen completely.

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Just type in exit.

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In my case for both Mac and Windows.

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And that should exit from the interactive Ruby screen.

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I am running a Windows 7 machine so I'm going to open up the interactive Ruby screen.

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If you are on a Mac just type in i are being your terminal and that should bring up the screen so I'm

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just going to open our programs and inside the ruby folder.

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You should see the interactive Ruby icon.

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Click on that.

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So this is the.

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I'm just going to type in a few commands here.

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I'm just going to create a variable.

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I'm just going to call the variable x are setted to hate create another variable.

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Call it why I I'm going to give it a value of mine.

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I am going to quit mother variable.

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Call the set and they're going to make that B value of y take away X.

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Why take away X.

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Now give me the value of x of Z and that should be one.

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All right.

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So now say for example you've been working for a long time and your screen is getting quite full and

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to clear it just typing system

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and then empathises

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quote fear less quote close around.

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This is an end to an issue.

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Clay visqueen All right so this is what you should get.

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If you have a Mac you can try the suggestion I showed in the slide so to exit the interactive Rubis

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queen just type in exit lower case that should take you out.

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So this concludes this lecture.

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Thanks for watching.

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Bye for now.