#command cdx join -ktwo.tres,float $TMP/aaa $TMP/bbb -o 2.1-3,~2,1.3,1.1
#infile aaa
 CDX	one	two	three
aaa	3	ccc
ddd	20	fff
ggg	100	iii
#infile bbb
 CDX	uno	dos	tres
bbb	DDD	3
ddd	FFF	4
ggg	III	50
hhh	JJJ	100
#stdout
 CDX	uno	tres	three	one
bbb	3	ccc	aaa
hhh	100	iii	ggg