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- All right, so here is
the first assignment.

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Use the appropriate command to locate

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all files on your system

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with the size bigger than 100 megabytes

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and write the result of that command

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to the file /tmp/bigfiles

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and create a hard link in
the user root home directory

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with the name bigfiles that links

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to the file created in the previous step.

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So how do we do that?

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Well, to find files we
have to find utility.

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We need to find on the entire system.

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So find / -size +100M,

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let's start with that.

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And there we can see files

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that are bigger than 100 megabyte.

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So that's pretty easy.

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We need to write a result
of the command to the file.

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tmp/bigfiles.

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So we can use redirection

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on the standard out to
write to tmp/bigfiles.

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Now you can see that only the
standard error is displayed

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on screen and tmp/bigfiles
has the results that I wanted.

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Next we need to create a hard link

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in user root home directory

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with the name bigfiles that links

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to the file created in the previous step.

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Hard link is simple ln/tmp/bigfiles,

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"bigfiles".

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And oh no, I am getting a field to

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create hard link,
"bigfiles", /tmp/bigfiles

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invalid cross-device link,
you know what's going on.

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This is the system that

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that I have used throughout this course

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and a TMP directory is
on this TMP RAM disk.

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So if I'm going to use systemctl disable

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minus minus now tmp.mount,

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then it is failing.

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Does that make sense that it's failing?

40
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Well I think it does.

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Lsof on tmp is showing open files.

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We have open files
including gnome terminal.

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Good, let's just do systemctl

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disable tmp.mount and reboot.

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That's the only way to get
rid of the open files anyway.

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And after the reboot we can try it again.

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Alright, we are back.

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Let's verify mount, pipe, grap tmp.

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And I see a lot of tmpfs, but not on /tmp.

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So that means that I can use my

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my find command again
to create /tmp/bigfiles

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before I've written to the RAM drive.

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So that doesn't exist anymore.

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And now I can use the ln command again.

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And the link is now working.

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Shall we verify, ls minus il/tmp/bigfiles?

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And big files is showing that they exist.

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And here we have the I note number 1809.

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These are the same for both of the files

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and that means that
really it's the same file.