transforming a regex match to upper case using linux

Question

I would like to search for the following regex: "[ag][ag]aag[acg]" and transform only the whole match to uppercase but not individual search for a or g. i tried sed 'y/[ag][ag]aag[acg]/[AG][AG]AAG[ACG]/' but that transforms individual search for lowercase a or g to upper case A or G. I want to only transform when it found matches to the whole sequence.

Greatly appreciate the help

Answer 1

With sed:

sed 's/\([ag][ag]aag[acg]\)/\U\1/' input

which finds a match to [ag][ag]aag[acg] and captures this match \\(...\\) . It then replaces the match with its upper-cased version \\U\\1 .

Answer 2

The sed statement @perreal posted works. are you sure you are using it correctly?

Contents of testsed = agaaga

sed 's/([ag][ag]aag[acg])/\\U\\1/' testsed

AGAAGA