Reminder to strip off carriage returns

data.txt

A B C
1 2 3
4 5 6
7 8 9

filter.awk

#!/usr/bin/awk -f

BEGIN {
    i = 0
}

NR > 1 {
    A[i] = $1
    B[i] = $2
    C[i] = $3
    i++
}

END {
    for (j = 0; j < i; j++) {
        print "x", A[j], B[j], C[j], "y"
    }
}

This is what we want:

> ./filter.awk data.txt
x 1 2 3 y
x 4 5 6 y
x 7 8 9 y

This is what we get:

> ./filter.awk data.txt
 y1 2 3
 y4 5 6
 y7 8 9