AWK question

[bholav]

I have two files that read like below.
a. I need to create a third file that is output in the same format as the two files after comapring the individual fields ,
for example comparison $3 of file1 is 7 and file2 is 1. Since they are not equal I'd like to output a "1" if not a "X" on file3




file1 : 1 1 7 7 1 7 1 1 7 1 1 7 1 1 7 7 1 7 1 7 7 1 7 1 1 7 1 1 1 1 1 1

file2: 1 1 1 1 1 1 7 1 7 7 1 1 7 1 7 7 7 7 1 1 7 1 7 7 1 1 1 1 1 1 1 1

 

[CaKiwi]

I'm not sure when you want to print a 1 and when you want to print an X, but this should get you started.

{
  if ((getline a < &quot;f2.dat&quot;) <= 0) {
    print &quot;error&quot;
    exit
  }
  n2 = split(a, a2, &quot; &quot;)
  if (n2 != NF) {
    print &quot;error&quot;
    next
  }
  for (j=1;j<=NF;j++) {
    if ($j==a2[j]) {
      printf $j &quot; &quot; # or printf &quot;1 &quot; ?
    }
    else {
      printf &quot;X &quot;
    }
  }
  print &quot;&quot;
}

Hope this helps. CaKiwi