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This topic is about AWK – Array Membership Operator.

It is represented by in. It is used while accessing array elements. The following example prints array elements using this operator.

Example

[jerry]$ awk 'BEGIN { 
   arr[0] = 1; arr[1] = 2; arr[2] = 3; for (i in arr) printf "arr[%d] = %d\n", i, arr[i]
}'

On executing this code, you get the following result −

Output

arr[0] = 1
arr[1] = 2
arr[2] = 3

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