#!/bin/gawk -f
BEGIN{
	ncol=split(ARGV[1],col,",");
	for (i=1;i<ARGC-1;i++){
			ARGV[i]=ARGV[i+1]
	}
	ARGC--
}
{
	for (i=1;i<=ncol;i++){
		printf("%s",$(col[i]))
		if (i!=ncol){printf(" ")}
	}
	printf("\n")
}
