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Now we have one archive file, but the file is bigger than the sum of the original files.

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So what you want to compress those files for ease of transport.

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So Linux has several comments capable of creating compressed files, so we will look at this here.

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GZIP, which uses the extension to, uh, here.

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Excellent.

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Now Jesus here to zip is a user's extension.

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Tosh, GZ or tag is in here like that.

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Um, so we have these two here, these two, uh, here.

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Uh, which uses extension tosh these to here.

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Actually, this is not separate and we have compress, uh, compress here.

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And this is that he uses the Taj Z here like that.

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So the these all are capable of compressing our files, but they use different compression algorithms

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and have different compression ratios.

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So therefore we will look at each one and what it's capable of in general.

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You know, compress is the fastest, compress is the fastest.

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But the result those files are larger, larger, so easy tool is the tool here is a obvious, but the

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resultant files are the Somalis and GZ files somewhere in between.

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Fast the compress and peace to the main reason you as budding kicker.

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You should know all three Maytals methods is not.

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When accessing other tools, you will run into various types of compression.

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Therefore, this section shows you how to deal with them.

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Main methods of compression so they accomplish compression with GCP, and I will show you.

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So let's right.

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Uh, g zip Jeannie, you zip here first.

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Um, and as is the most commonly used compression utility in Linux, so it's popular in Linux, so you

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can compress.

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Um, I'll take this project, uh, tar file by entering, uh, def here, for example.

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Let's delete our town files here, and let's complete new products in.

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ASAP here, tick beans and.

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Uh, one tour operator here.

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So by entering here and let's enter.

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And that helps.

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And as you can see here, which is it.

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And so.

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As you can see here.

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And it's open here.

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So we have seen huge file here.

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And we have.

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Actually, let's return our.

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Take spins project from Trashier, because we I will do some example here.

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So let's anticipate as well here and uh, to commence.

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And take this one here and take this.

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The latest tech business here, so we can.

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We can compress these, uh, these compressed file to bust this action that compress it's just carried

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and the file is not reduced here, so we can reduce this file here, for example, unless unless you

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consider it, let's copy it here.

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See Page Take Bins Project here.

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Take Bins Project.

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And tech being.

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Take things for the clear three year war wrecked year in.

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Or just like that copy.

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But Typekit else.

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So we created a copy of it.

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So let's give our take advanced project, which means project clear and take this project.

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So as you can see here, take this project tarrier touches us, so we copy that.

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So now Alice in here.

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So.

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As you can see, here are file size is reduced to.

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My significant amount, so let's say that we used, uh, before, uh, of it, we used to build card

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operator years.

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Let me show you here.

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So, uh, this tells Lennox that the coal mines filled apply to any file that begins with thick pins,

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uh, within file extension, you will use similar notation, uh, for the following samples when you

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read too long listing on the directory we can use take bins.

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Tar has been replaced by here.

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Uh, take this project tar to, uh, take this project.

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Tar GZ here we carried around a file.

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Uh, like that's just a copy here.

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So as you can see, this pint sized is sized is, um, use significant amount almost less calculated,

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uh, three nine nine three six zero and write to.

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As you can see here, the file size is up.

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Sized, um, actually one hundred seven to eight times.

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Uh, so.

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We can then then compress that world by using the Guns Zapier command concept short for a gene you unzip

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comment.

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Hear hear.

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Gene Ann's opinion.

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So J.

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Ansip, take things.

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Uh, Project Project Parcheesi here and let's do it and here.

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So we unzipped here.

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As you can see, there is a Node.js extension of it here and our file size.

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It's turned the same here.

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So once uncompressed it on compress, the file is no longer saved the entire GS6 extension.

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But with the town extension, is that so awesome to see that it's returned to its original size?

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Uh, here.

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And try doing a long list to confirm this, it's for, um, not nothing than the Jesus panels to be

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used except zip file.

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See it.

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Uh, so.

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We have become compressed, as I said earlier, if to and here and there, often all the.

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Use compression utilities and Lennox is busy too, which works similarly to Jersey but has better compression

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ratios, meaning that the resulting file will even be smaller than that here.

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Actually, we closed that Coakley tonight, right?

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Oh, yes, because that calculator and a calculator here.

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So now we will zipped these files again here, so be easy to, uh, take Bill's project that heart here

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and the list and click here.

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As you can see here, it's almost four hundred eighty eight bytes here.

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So now that's calculated 10 nine nine three six zero.

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And divide by four eight eight.

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Here, as you can see, there is almost eight hundred, um, eighteen times.

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Um, our file is smaller than our general file, so but in a previous case, it was one hundred more

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than one hundred, uh, seventeen here, seventeen here.

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So uh, when you uh.

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To a long listing, and you can see the bishop has compress the file just, uh, down to of Solomon

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by sea announcement that the file extension is no to be easy to hear.

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So to uncompressed the compressed file used in, uh, b unzip tool and take this project to be easy

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to hear.

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And this s here.

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And as you can see it on file sizes here.

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So.

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We can use the compress and this will I want to show you lastly here.

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Uh, so.

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The compress, um, the final, you can use the compressed air to compress the file here.

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This is probably the least commonly used compression utility, but it's easy to remember to use it.

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Simply enter the compress pulled by the file name.

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For example, take tech year project that Tanya here and its out here.

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And as you can see, it's not much of compression here, as I said earlier in line nine three six zero.

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They might be, uh, twelve four hundred and twenty years.

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And as you can see here, it's smaller than just, uh, thirty one times here.

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So not the not that the compression utility reduced size of file.

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Um, here.

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Uh, also that the file extension now is part z here with the uppercase zero.

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So to decompress the same file, just compress, you know, just use uncompressed here and compress

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here and then your file name, thick pins project that's here.

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And oh, as well.

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Yeah.

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So you can also use the genes, if you knew what was a command with files that have been compressed,

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uh, with compress commentate.

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Just keep in mind so we can create a bit by bit or physical copies of the storage devices as well here,

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uh, just within the world of information security and hacking while archiving common sense, uh, above

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the list in its usefulness so that the the command makes a bit by bit copy of a file, a file system

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would have an entire entire hard drive here.

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So this means that anyone deleted files are copied.

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Yes, it's important to know that your deleted files may be recovered or recoverable near making for

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easy discovery and recovery.

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So deleted files will not be copied with the most logical copying utilities such as them.

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Copy here and um, one once a hacker has owned a target system that they deem common with all of them,

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uh, to copy the entire hard drive or a storage device to their system.

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So in addition, those people whose job is to catch hackers, namely forensic investigators, will likely

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use it is common to make a physical copy of the hard drive with related files and other artifacts that

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might be useful for finding evidence against a hacker.

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It's critical to note that the DDR command shall not be used for typical day to day copying of files

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and storage devices because it's very small here.

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Other commands to, uh, do the job faster and more efficiently.

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So it is through the excellent when you copy it, when you need a copy of a storage device without filesystem

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or other logical structures, such as in a forensic investigation here.

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So they give is the input file here in the input file.

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Uh, here and off is the output file.

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So if you wanted to make the physical copy of your flash drive, assuming your flash drive is, uh,

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8TB here and then input file is going a bit dev SDB, this is your flashback flash drive and output

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file is your the file, which you want to copy bit by bit.

153
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Your flash drive here is in this case, for example, it will then form here Carly and our flash copy

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copy security secrets here.

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And let's, uh, here.

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So let's, uh, break down this comment.

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You so tidy your physical copy command.

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So if this is your input file and with they, Steber is representing your flash drive in the category

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directory and off here.

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The desired design.

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That's your output file.

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And uh, here.

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Uh, roll it home call.

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The secret here is the name of, uh, the file you want.

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Copy to the bicycle copy to form a complete explanation of the Linux system design, uh, design item

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or authorize.

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It will be discussed in the later lectures you.

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So Linux has a number of commands to enable you to combine and compress your files for easier transfer.

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So therefore, campaigning for a star is the command of choice, and you have at least three utilities

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for compressing files.

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These are GZIP peasy to and compress, so are with different compression ratios so that the command

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goes above and beyond.

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It enables you to make a physical copy of storage devices without a logical structure, such as a file

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system, allowing you to recover such artifacts as deleted files.