[SOLVED] awk insert text between specific number of records

[Claus7]

Hello,

what we want to do : I want with awk to add text in a file from NR = 10 till NR = 20. The numbers are not the same every time and I provide them as an example.
I was able to add text in line 10 or in every other line, yet no more than one line per text. The for, if or while statements with NR as a variable doesn't do the job, yet only if the text is going to be inserted in the beginning of the file.
Does anyone have any idea? Something like : for (NR=10;NR<=20;NR++) would be very nice, YET this doesn't work :(

EDIT: Ok, I found it and I post it, yet it took me the whole day!


awk '{
if (NR>=10 && NR<=20)
{printf "%6d %5d %5d %10.5f %15.2f \n", 4,5,6,7,8}
else
{print $0 }
}' input > output
:)
Regards!

[ghostdog74]

you can save on the if/else , as awk's pattern construct already incorporate "if"


awk 'NR>=10 && NR<=20 {
printf "%6d %5d %5d %10.5f %15.2f \n", 4,5,6,7,8
next
}1' file