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Let's use the first few Linux commands at our command line terminal in our Kalli Linux box.

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So once you've opened up Oracle Virtual Box, find your Caleigh Linux should be saved in its previous

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state.

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We're going to start at.

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And if you've let your Linux machine log out, all you have to remember is route and tour T, double

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o r.

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And we sign signed into our Kelly Linux box and remember, if you ever forget that, it's down here

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in the description in Oracle Virtual Box, I'm going to go to full screen so that we can see this better.

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We go.

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And in Kelly Lennox, I'm going to open the terminal.

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That's over here on the left hand side.

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Or you can go up to applications and come down to useful applications.

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And then you can see accessories and Internet office.

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You can see lots of different things down there.

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The easiest way to grab it is from here at the command line terminal.

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And we're going to zoom in.

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Till our command line terminal almost fills up the screen, just so we'll be able to see everything

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pretty clearly as we do each of these.

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Well, when I'm first logged in as my route user, if I do an L.

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S.

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That is directory listing.

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It will tell me that I've got all my home files and I can see that I'm in as route on my Caleigh host.

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And that, Tilde, just means that I'm in my home directory or my users working profile directory.

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So when I do an LSD, I can see that just like on a Windows machine, I have desktop downloads, pictures,

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videos, music.

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All of these are defaults under each user in Linux, just like we'd see in Windows.

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There are some other commands, though, that we can do with or some there's some other options we can

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have with the Ellis' command, like L.

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S Dash.

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Hey.

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And this is going to show all the files, not just the ones that are visible.

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This shows hidden files.

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So we can see their folders like Dot Dot and their are files like Bash History.

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There are hidden files in here.

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There's some public files and then we have directories as well.

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You can tell on my Caleigh Linux box right now, by default, the directories are showing in a slightly

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different color from the files.

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That helps me know that documents and desktop are folders.

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So if I say L.

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S Dash L.

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And those are L's in both those locations on an Atlas Dash one less dash l.

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I can list a slightly different way so that I see directory.

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And then I see the desktop is colored like a directory.

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That is my actual desktop folder.

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Just like I would have on Windows documents.

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The same thing as a directory.

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And these are whether they're readable or rideable for each.

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For first of all, the owner and then for my group.

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And then for everybody or the world.

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So anybody can read this folder.

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Who has access to this machine?

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Anybody from my group can read and run files inside these directories, and I can read and write.

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So this l'Est Ash El gives us a long listing, so it gives every bit of information about these and

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you can see I have I've created a file down here, Will, we'll do a little bit more with files and

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a little bit, but that's just a regular file.

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If I combine those two, I can say L.

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S space Dash eight L.

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And hit enter.

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And you say I get a long listing of all the files.

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So Ellis Dash A-L gives me a long listing of all the files, including hidden files and hidden folders.

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And you can see we have some hidden files.

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Your Basche history is just the history of all the commands you've entered into your shell.

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This Basche shell just gives us a way to keep track for this batch.

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History gives us a keep track.

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A way to keep track of all the Linux commands that we've entered in the shell like this.

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Ellis Dash A-L.

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We call it our command line shell in the terminal.

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And when I get a full screen like this, I'll show you one bonus thing that's handy.

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Clear.

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It clears the screen back up so we can come back up to the top.

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So Ellis shows us all of our files.

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Ellis Dash A-L shows us everything, including hidden files and along listing and clear.

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We'll just bring us back up to clear terminal screen.

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So let's change directories inside one of those folders, c.D Space.

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And let's go to our desktop.

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So c.D will change directories, c.D Space and the name of a folder.

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Well, let's show you a shortcut that will help us as well.

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Oh, and changing directories back up one c.D space dot dot.

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The two dots will take us back up one directory.

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That's like hitting the up arrow when you have a graphical user interface for your files.

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So if I say c.D space d e if I start a capital D in a lowercase E capitalization does matter in Linux

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C.

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D.

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Space Capital D.

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Little E.

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And then hit the tab key and you'll notice that it auto fills for me and I can see space dot dot to

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go back up a directory c.d space D little o notice via tab.

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It doesn't do anything.

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If I hit tab twice it tells me there are two folders, documents and downloads.

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So I need one more character.

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I want to go into my documents folder, C.D. Dock Tab and the tab key will help you autofill anytime

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you're surfing through directories or trying to find specific files.

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That's a really helpful autocomplete feature in Linux and in Windows.

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We'll see that as well.

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So if I see in the documents, I can see them in the documents folder.

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If I just press c.D and hit enter.

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Notice it takes me back to my tilde or my home directory.

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If I do an Ellis here, I'm back home.

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I'm back up one directory, c.D space dot dot always six you up one directory c.D.

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And then nothing c.D just by itself in Linux will take us to our user directory, our home directory.

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So it's a handy thing to be able to do from the command line.

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Let's clear the screen.

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And do a couple more commands.

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Let's try to find out what kind of computer we're running on.

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So what do you name?

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Dash A.

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This is our Unix name.

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Our hostname.

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We can say I'm running on a Caleigh Linux, four point nine on an HMD 64 Debian Linux.

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So we can see a lot of information about the operating system that this computer's running.

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Let's do another command history.

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And we'll see all the things that I've done in my history.

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That was history.

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And let me show you another really useful feature in Linux and Windows, both from the command line,

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if you'll just hit your up arrow.

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Do you see you get your last few commands.

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So if you want to go back and redo a command, all you have to do is sit you're up arrow and then down.

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We'll take you back to where you are.

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So you up and down arrows will give you a shortcut to go back in your history.

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So we've hit four really cool commands.

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Ellis c.D, the you name to get our Unix name.

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And then history.

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And then we've seen how we can use TABD Autofill and the up arrow and down arrow to repeat a command

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if we need to from our history.

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We'll see even more in the next lesson.