#command cdx join -k2,float $TMP/aaa $TMP/bbb
#infile aaa
 CDX	one	two	three
aaa	3	ccc
ddd	20	fff
ggg	100	iii
#infile bbb
 CDX	uno	dos	tres
bbb	3	DDD
ddd	4	FFF
ggg	50	III
hhh	100	JJJ
#stdout
 CDX	one	two	three	uno	tres
aaa	3	ccc	bbb	DDD
ggg	100	iii	hhh	JJJ