shithub: trueawk

ref: 2bab10b60b3f4d3bbefdcb60410655f317d1a452
dir: /testdir/t.array1/

{for(i=1; i<=NF; i++) {
	if (x[$i] == "")
		y[++n] = $i
	x[$i]++
 }
}
END {
	for (i=0; i<n; i++)
		print (y[i], x[y[i]])
}