 Hello, and thank you for joining me. Today we're gonna be looking at a little bit of the list command, the LS command, which lists the file and directories. Of course, we can do something like this and say list all PDFs or all PNGs or all things starting with cats. You know the basics of that. Let's say I wanna show everything but a certain match. Let's say I wanna show everything but files that start with a cat or I wanna show all files that aren't PNG files. How do I go about that? Well, there's two different ways. Of course, with pretty much every command in your shell, you should be able to type in man LS and find out a, find a manual file here. And if we search for here, there is a command that is the dash dash hide pattern. So do not list implied entries matching shell patterns. This will be all written by dash A and dash A. So let's go ahead and give that a try. So I can say LS dash hide equals and I'll say dot PNG. So now it should list all files but the PNG files. Great. I can do the same thing with PDF files. It will ignore all PDF files and I should be able to say all cat files, ignore those or at least ignore all dot cat, cat.jpeg files. So we should still get our PNG files to have cat. So that's using the built in hide command. But real quick, I'll touch on another thing that I probably should do a whole video on but that is called globbing. So to enable globbing and bash, we're gonna type in shopt dash s and we're gonna say ext glob. And once you do that, now globbing is enabled. So what we can do here now is we can also, we can do list and then we can do exclamation mark and then inside parentheses here say dot jpeg and it will ignore all dot jpegs. We can say ignore all cat jpegs and it will ignore those. We can say ignore all files that have cat at the beginning. We can ignore all files that have at anywhere in them. But you can also globbing do something like this. I can say ignore all dot jpegs, pipe symbol and dot PNG files. So now we'll list everything except for jpegs and PNGs. We can also say to ignore all dot gif or jif files. So now we're just looking at these PDF files. So that's globbing and again, I can do a whole video on that. I might at some point, but if you ever see something like this in a shell command, it's probably globbing. It does have to be enabled with the shop dash s but you can I believe if you do dash u that turns it off. So now if I try to run that, yeah, it's not going to work. So you have to enable globbing and globbing is very useful in using a lot of times, but I just want to go over basic list command to invert those lists. So again, the built in command for list would be the dash dash hide. So we have that. And then there's also globbing. Once globbing has turned on, you can do something like that. Anyway, that was just a quick overview of reversing that search. I thank you for watching. And as always, I hope that you have a great day. Visit filmsbychrist.com. That's Chris of the Cave. There's a link in the description. Have a great day.