 Okay, this video is a part of a series. Be sure to check out the, hopefully an annotation on the screen. If not, the description of this video should have a link to the full playlist. And we're just going over some basics of shell commands in Linux. And we're looking today, again, at grep, which is an external tool. It's not built into the shell, but is a very useful tool and very common. And as I stated in the last video, it's used to search for words or phrases. So example, a line from the file, file.txt, you can see it returns two lines. We can look at this whole file by using cat.txt. So I'm going to show you a few more options. Let's say you have more than one thing you want to search for. And there's two different ways to do this, depending on what results you want. But let's say I want to return from this file, just keep it simple. Any line that has the word also or display in it. So if we wanted to find the line that says also, I can say grep. The word also from file, you see it returns one. Again, we can make that case insensitive with dash i, and then we'll get both lines. And I can also do display, and I get that. But if I was to, let's say I want to do any lines that have the word display or also, I can't just do that because now it's looking for any line that has the words also display. What you can do is use the dash e. So we can say dash e also dash e display. So the dash e is telling us for each one of these things that we're looking for. So I can hit enter now and it has returned case insensitive. All lines that have also in it. And also all lines that have display in it. So that is being able to search for multiple things. That's just a quick look. I hope you enjoy this video. Be sure to check out my Patreon page, patreon.com. Ford slash Mellex1000 if you want to become a supporter of mine. If you can't financially support me, you can definitely help out by liking, subscribing, commenting, and sharing my videos. So go ahead, let me know what you think below in the comments. Tell me if there's any tips or tricks with grep that you know of that you want to share. And as always, I thank you for watching. I hope that you have a great day.