I am formatting an input file using:

awk -v OFS="n" '{$1=$1}1' inputfile | awk '!/r/'

because the lines of my input file end with rrn and i want to prevent empty lines in output. Is it possible to call awk only once?

I tried:

awk -v OFS="n" '{$1=$1}!/r/' inputfile

But it seems it is applied to the initial record so the output is empty.

EDIT
I don’t know why but this works:

awk -v OFS="n" '{$1=$1; print $1}' inputfile