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In this video
we'll talk about awg.

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Org is a great utility for
performing more complex operations on text.

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And it has advanced features that make
it into a scripting language by itself.

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And when AWG was invented back in the 1970s,
that's exactly what it was, a scripting language, because

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that is what was needed in the days that
you couldn't edit text files in full text mode.

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Now the advanced features of
AWK are not really needed

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anymore. But AWK can make
complex tasks a lot easier.

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Let me show you the examples
and let me run them for you.

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Starting
with awk.

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And then you have the AWK
operation which is always between single quotes.

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And I'm going to start by
using print $0 in etc passwd.

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Now, $0 is not very meaningful.
It just prints the entire text.

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Next example. Org minus uppercase
F colon. It's a field delimiter.

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And I want to print
$4 in etc pass WD.

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That's the fourth
column in ETC. Passwd.

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Now that is not
so spectacular by itself.

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But what makes AUG really nice
is that we can look for a

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specific text. So here I'm looking
for lines that contain the text Linda

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and only if it contains the
text Linda. Then we are printing $4.

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And as you can see, 1001
is the user ID of user Linda.

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Now another one I'm going to print $1
in case that $3 is greater than $999.

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What
is $3?

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Well, that contains the user IDs and
for people users, you normally would have a

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user ID that is greater than $999.
And $1 contains the usernames. So. So this

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line will only print names of users
with the user id greater than 999.

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Now you should notice that
awk is not good for sorting.

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So a command like sort t
k3 3n etcpasswd is doing a numeric

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sort on the third field in
etcpasswd. That's not something that you can

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easily do using AWK as a
one liner. Let me show you.

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So what do we see here?
Well, you need to look carefully,

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but we keep the entire
content of the ETCPass WD field.

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But we are sorting it
numerically on the third column.

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And that means that the lowest user IDs are
first and the highest user IDs are last. And that's

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what you need to know about the things that
you can and cannot do with the ORC utility.