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In this lecture we talk about a variable assignment and how to do Maat operations with variables assignment

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is pretty simple and it's the same as you know for a beshe when we go on for example into variable A

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assign value one and we use a equal sign one for string assignment when we want to assign a word or

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a sentence.

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We are using quotation marks if we want increment value of variable A.

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We just use plus plus or we can use a equal sign a plus one.

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The most common mud operations are very easy as you can see.

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Also we have more a matter of patience available for awk.

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But in most cases you will not need to then we can now practice some basic math and as now we won't

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do any file in both just live with the same as me in the BEGIN section and one plus one and we see that

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this is working.

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Outproduce is 2 now in six minus 1

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result is 5.

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We can do also easily some division

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and does all operates.

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Floating point

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yes it does.

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And we can also try to do some multiplication.

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So any type of operation can be done here.

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This is amazing.

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Now let's print number of records in a passport file and as a record separator I will use newline character.

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So in the BEGIN section I will define a record separator as a new line

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and in N.S. either print number of records.

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So in my case I have 41 record forty one lines.

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Now let's create a variable count inside BEGIN section.

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So in BEGIN section we will have a record separator which is equal to no line and you will have also

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a variable called

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which is equals to zero.

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And for each record be will increase counter the value by 1 in the main body section

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and in the section will print number of records.

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And also we'll print a variable count

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in the N.S. number of records and value of variable count should be the same because they are doing

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the same for each record.

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They increase in value by 1 and I can see same numbers here.

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Great.

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Now let's increase our variable count for each record by 2 instead of by only 1

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and we see that the variable count has now its value two times bigger than number of records.

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Great.