Original subtitles

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We've covered a lot of ground so far and there's plenty more to cover.

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Having said that there is no way on earth we can cover everything in Linux and I can guarantee you that

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there will never ever be a Linux course that teaches you everything in the next as a matter of fact.

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You don't need to do that.

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You actually do not need to go and learn every single command and the next the way to go about developing

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your Linux skills and getting better and better at it is learning how to use the necessary tools whenever

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you need to.

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And the way you can do that is by knowing and learning how to get help.

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And this is what we're going to be covering in this section.

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We're going to be covering how and when to get help and how to use manuals when necessary.

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So let's say you come across a file that you have no clue what this file is.

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It has a weird file extension.

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You don't even know what tool you can use with that file.

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What do you do in this case.

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You use a command called File and the name of the file this determines the format of the file and it

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gives you an output that says this is the type of the file.

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And then you can use another command called opera posts with any keyword that you choose that will tell

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you what command you can use.

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Let's see that in action.

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I'm going to see the end to a directory called word lists.

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This is a directory where we have a number of what we call password dictionaries that we use and password

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attacks you learn about this in detail and the more advanced courses.

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For now let's say the end of that victory typing CDs slash user slash slash were lists and I got my

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eye on this rock.

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You thought T X did not gz file.

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Now assuming I'm completely new to the next I look at.

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And I have no idea what this file is.

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What on earth is this dot gz file.

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Fear not.

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All I need to do is type file and the name of the file and I get an output that says this is a G is

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it compressed data.

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All right.

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Now I'm getting somewhere.

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Now at least I know what kind of Phyliss I pull out another tool from my arsenal and I type I propose

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does it please tell me what tools I can use with these files.

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I look at the output and it looks like the first one is the one that makes sense.

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I can use it to compress or expand files.

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All right.

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Perfect.

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So what is this to which Jesus tells me it's on the slash bin slash geezer.

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Excellent.

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So now I know the type of the file.

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I know what tool I can use to decompress this file and I know exactly what it is.

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But hold on a second.

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That doesn't necessarily mean I know how to use this command to find out what I can do with this command.

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I can use the man commands.

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Man stands for manual.

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And almost every tool in the next would have a manual attached to it.

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But what exactly is the name of the manual for that tool.

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I can find out by using the man mindscape option which asks Linux to please go and find all the manual

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files associated with the key word that I'm looking for.

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And this case is jes it.

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And Linux tells me there's a man file called geezer.

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And another one called Z Force.

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Excellent.

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We'll see in a second how we look into my files.

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But let's say I just want a quick help.

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I don't want to go through pages and pages of manuals.

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One option I can use is the minus minus.

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So I type is that minus minus help and I have a quick list of options that I can use with this tool.

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And here we can also see that the minus H will do the same thing.

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So if I typed gs at minus H I'll get the same help output

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this by the way applies to almost every command that you use and the next type the command minus H or

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minus minus help and you will get a quick help output.

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If that's not enough for me and I want more information this is what I can pull out the manual and to

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do that I'll type man GS up and the manual opens.

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I can use the up and down key to go up one line or down one line.

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I can use the page up key or the page down key to go up and down one page.

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And if I want to return to the beginning of the manual I can just hit G or if I want to go to the end

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of the manual I can type shift G usually at the end of the manuals you'll find very useful examples.

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Let's say I want to search for a keyword compress for example to do that.

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I hit the slash key which gives me the option to start typing.

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I type compress and I hit enter.

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And notice how all the compressed words are highlighted in my text if I want to move to the next words

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I had the end key if I want to go back to the previous one it's shift plus an.

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And when I'm done reading the manual to leave all I need to do is hit the q key.

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Your mission for the section.

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Use the same skills we just learnt to find out what the locate command does and then understand what

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the difference is between locate and which once you're done navigate the slash temp directory try and

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locate the Unix underscore slash passwords to XTi find find where it is and.

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And while you are in the temp directory.

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Copy the file from its location to the temp directory.

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So copy the Unix underscore passer's to the XTi from whatever it is to the democratic that victory and

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why you were there.

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Find out what command you can use to count the words in the file.

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This is one of the password dictionary files that we use and pass with the attacks.

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Again that's another topic that you be learning and the more advanced courses by the command were going

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to be using will give you a rough idea on the huge number of passwords we can be using and password

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that decks.

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Once you're done and ready we can move on to the next section.