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All right.

2
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So you needed to create a new file system.

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In case you don't have the partition,

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you need to start by creating the partition.

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It happens that I had a technical issue,

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and for that reason, I needed to change my machine.

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So I'm going to create a new partition on my SDB device,

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making a partition number 3 and with a size of 4 gigabytes.

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There we go.

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W to write.

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And now I can create my file system MKXFS on dev SDB 3.

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Now, MKXFS is not the only thing that we wanted in this lab.

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We also wanted to generate a new UUID.

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So let me start by showing you block ID.

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And block ID, or BLKKID, is showing the current UUID

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that has been generated right here.

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Notice the name.

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It ends 9AE3.

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So if I want to generate a new UUID,

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I can use XFS admin minus U generate on dev SDB 3.

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And there you can see that the new UUID has been generated.

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And block ID is going to confirm that SDB 3 doesn't end in AE3

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anymore.

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So here we have it.

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This is the UUID.

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Now, I want to show you something cool.

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I want to mount this file system by using the UUID.

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Of course, in a graphical user interface,

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you can easily use your mouse.

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But what are you going to do in a non-graphical user interface?

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Well, there I would use block ID.

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And I would use a pipe and send the output to AUC.

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And next, I'm going to tell AUC to look for SDB 3.

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And then I want it to print $2, which is the second field.

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And there we go.

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Here we have the UUID.

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Now that I have isolated my UUID from the command line,

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I can use command line redirection.

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Don't forget to use a double redirector

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and not a single one to write the output to etc fstab.

41
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And then I need to mount it.

42
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So let's mount it on the directory new.

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Need to have something as a name.

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And in etc fstab, I can see the UUID is waiting for me.

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And I'm going to mount it on slash new

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with XFS as the file system and 0 and 0 as the mount options.

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So to test, mount minus A is always a good test.

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And oh, well, I'm happy I did it because you

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can see it's complaining about an unknown parameter.

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And is there a reason why we get an unknown parameter?

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Absolutely.

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Do you see what's going on?

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We are missing the defaults option.

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There is no line with the file system mount option.

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And for that reason, it was complaining.

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That is why mount minus A is convenient

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because if you just reboot, your reboot will fail

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and you need to go into troubleshooting.

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So now if I use mount minus A again,

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it's only giving me a hint about systemctl daemon reload,

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which I choose to ignore.

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My file system should be mounted.

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LSBLK is showing it.

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And there we go.

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SCB3 is mounted on the partition slash new.

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So that is what I had in mind for this lab.