#command cdx join -k1 $TMP/aaa $TMP/bbb -a 2,$TMP/bar -a 1,$TMP/foo
#infile aaa
 CDX	one	two	three
aaa	bbb	ccc
ddd	eee	fff
ggg	hhh	iii
#infile bbb
 CDX	uno	dos	tres
bbb	CCC	DDD
ddd	EEE	FFF
ggg	HHH	III
hhh	III	JJJ
#stdout
 CDX	one	two	three	dos	tres
ddd	eee	fff	EEE	FFF
ggg	hhh	iii	HHH	III
#outfile foo
 CDX	one	two	three
aaa	bbb	ccc
#outfile bar
 CDX	uno	dos	tres
bbb	CCC	DDD
hhh	III	JJJ