#command cdx cgrep -p two,,foo $TMP/one $TMP/two
#infile one
 CDX	one	two	three
aaa	bbb	ccc
111	2foo2	333
qqq	www	eee
#infile two
 CDX	one	two	three
zzz	zfooz	zzz
aaa	bbb	ccc
qqq	www	eee
yyy	foo	yyy
#stdout
 CDX	one	two	three
111	2foo2	333
zzz	zfooz	zzz
yyy	foo	yyy