github.com/benhoyt/goawk@v1.8.1/testdata/gawk/nfloop.awk (about)

     1  BEGIN {
     2  	$0 = "aaa"
     3  	NF = 10
     4  	for (j = 2; j <= NF; ++j) {
     5  		$j = "_"
     6  	}
     7  	print
     8  }