 Okay, so in the last video we learned how to make a horizontal line across our screen like this. Regardless of how big our terminal screen is, it will calculate that. How are we doing this? We're using the printf and then printf and then we can give it this percent and a number in s. It will give us that number of spaces and then we're using tr. We're piping down the tr to replace those spaces with a particular character. And after doing that, tr is a great, great program for replacing individual characters. And I love it. I use it a lot. But there is a problem here. If we try to do this and we try to use a special character such as, in this case we're going to use Unicode. Unicode will give us some special characters such as here we have a dark block. If I try to do that, it doesn't work. If I try to do a skull and crossbones, it doesn't work. tr doesn't seem to like those Unicode characters. Now there might be a way I should look through its manual. It might be a way. But then I just, without having to look anything up, I decide I'm going to try using sed. So I'm going to use sed to replace our characters. So what we're saying here, again, is we're going to printf. Basically we're printing the number of spaces, t-puts giving us the number of characters across the screen, the number of columns. And then we're replacing all those spaces with a skull and crossbone. And now we have skull and crossbones across the screen. Again we can do something like our dark block here. We can also do a light block. So it's, you know, I guess once a denser block, I guess light and dark depends on your background. We can do a checkered block like this. And then we can also do, this isn't an underscore character, but it's a low block character. I don't want to say what you call it. It's different than doing an underscore like that. You can see it's thicker. But just wanted to do a video on that because I thought of that after the last video using tr because we're going to get into using some emojis and stuff and actually creating functions in the future videos for this. So again this was a short video just to follow up to the last video showing that you can use instead of tr, sed, which both are great applications. Sed is more commonly found. They're both commonly found on systems, but sed is even more commonly found. You're rare you're going to find a Linux or any type of Unix or Unix like system such as Linux that doesn't already have sed installed, it's already built into Busybox although tr might be as well. Anyway, we're going to get into this a little bit more in our next video where we're going to actually write a script using these functions that we're creating. So I do thank you for watching. Visit FilmsByChris.com. That's Chris at the Gate. There's a link in the description and hope to see you in the next video.