shithub: kwa

ref: d38caa1bee4fc59e86f2cc1de2787d319ac2bffe
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"
	}