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All right, so how are we
going to do all of this? Well,

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the appropriate way is to use
sudo vim and then we are going

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to vim etc profile D and
I'm going to call it sander sh.

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The only requirement is that
your extension ends in sh.

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So what do
we need? We need

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alias IP config
is IP addr show.

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It's important if
you define aliases.

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If the command that you want to run contains
spaces, you put the entire command between double quotes.

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Then we have this variable with the name color that
is set to the value red. Well, I'm going to

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use export color is red and this export makes sure
that the variable is available in sub shells as well.

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In the question I was asking to ensure the
aliases available in subshells aliases will always be available in

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subshell. No need to do anything about that. Now
a fun fact is that while I was explaining in

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the lessons, we also created a variable color with
the value green. Now who is going to win?

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Well, let's
figure out.

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The best way to figure out is to
close your terminal and to open a new terminal.

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And then I'm going to use
ipconfig and ipconfig. Well, that is working.

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And echo dollar
color is showing red.

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Now why is that? Well,
that is because of alphabetic order.

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I use center sh in the alphabetic order. That comes
after custom sh and that is why it is winning.

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No more sophisticated reason than
that. That's how it works.