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Let's print something out in this lecture we will use only big in section and in that section inside

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curly braces.

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We will print Hello.

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So hello.

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Inside the book for the Asian marks

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and we don't specify any file here.

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What has happened here.

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Begin the section in the room before processing any line.

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The main body of AWC and we don't have here any iron because we didn't provide input file or output

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from eco command.

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So it is completely OK to use only begin section.

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Basically what we did is same as if writing ICO.

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Hello.

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So let's look also another section of all program here.

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We are using the main body section of AWC which is process for each provided line and each time I push

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enter it means each time I for this example provide empty line org will print Hello.

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Great

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but what would have happened if we used now only N.S.

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and S..

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Is it only when Alk. processed all the lines

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and scenes.

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Here if you don't know where it is at the end of it'll never print Hello.

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So we need to terminate using control-C.

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Now let's provide some input into all using eco command eco.

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One two three four.

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Then pipe

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then keyboard awk and inside main body section will print hello.

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Dead means dead.

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All the print Hello.

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For each record for each line it finds and since we have only one line it will print hello one time

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if we provide.

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Instead of course some file it then lines we would see printed.

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Hello ten times.

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So let's create some file called Hello dot text and create fuel lines for example.

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First line

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second line second line for line and fifth line.

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Now let's print hello for each line for each record of provide the input file Hello dot text

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and AVC.

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Hello printed five times.

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Great we can provide data to all.

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Also using 5 so we will use by now

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and the output is decem great.

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Now to show clearly how begin and N.S. behaves we will specify Firstly begin section and we will print

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here begin part in the main body will print again.

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Hello

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you can see that begin.

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Part was performed before the main section started.

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Operated commands for each line where it prints hello so the printed beginning part 1 time and as we

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have 5 lines in all the text we see 5 time printed.

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Hello.

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Now we can add also and S..

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And in a dead end section will print and bar

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and after the main org section printed 5 time.

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Hello.

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We see also printed and anti-pot great.