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awkdata-processing

My awk script don't print 0 and NR with 0

This is my script. How to force my script to print also zero. It is very important to me. I don,t know why it is not print zero, I add a+0, so it should!

#!/bin/bash
awk 'a=$1/617 {print NR " " a+0}' sum.txt | tee autocor.txt

This is my input

1
0
0
1
0
0
0
0
1

and this is my output

1 0.00162075
4 0.00162075
9 0.00162075

Expected output

1 0.00162075
2 0
3 0
4 0.00162075
5 0
6 0
7 0
8 0
9 0.00162075
Solution

  • Your a = $1 / 617 condition will not be fulfilled when $1 == 0 (because this value is considered falsy in awk). If you want to print every result just do not add any condition to your rule:

    cat input | awk '{ print NR " " $1/617 }'

    Will print

    1 0.00162075
2 0
3 0
4 0.00162075
5 0
6 0
7 0
8 0
9 0.00162075