shithub: kwa

ref: 10e72d182aad860492f6ec2e80b0c05a4dc20b7a
dir: /test/t.in1/

	{ if (amount[$2] == "")
		name[++n] = $2
	  amount[$2] += $1
	}
END	{ for (i in name)
		print i, name[i], amount[name[i]] | "sort"
	}