Frage
input:
position fst
1 0.6
2 0.8
3 0.9
4 0.3
5 1
This gives me a header:
awk '{if ($2>=0.7) print $1}' input > output
but this doesn't:
awk '{if ($2<0.7) print $1}' input > output
How come?
Lösung
If you always want to print the header then use:
awk '{if (NR>1) {if ($2>=0.7) print $1} else print $1}'
awk '{if (NR>1) {if ($2<0.7) print $1} else print $1}'
Andere Tipps
In your second example, $2<0.7
is interpreted as "fst"<"0.7"
which is FALSE
You can add NR==1 ||
to always print first line:
$ awk 'NR==1 || $2<0.7{print $1}' input
position
1
4
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