#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