Apply a regular expression to a string in bash to get all the ocurrences of a group

I have a shell variable with a string like the following "PA-232 message1 GX-1234 message2 PER-10 message3"

I need to apply a regular expression that detects PA-232, GX-1234 and PER-10 and returns these ocurrences.

How can I do this in bash?

I’ve tried this:

echo "PA-232 message1 GX-1234 message2 PER-10 message3" | sed -r 's/^.*([A-Z]+-[0-9]+).*$/\1/'

But it returns

R-10

instead of

PA-232
GX-1234
PER-10

>Solution :

$ echo "PA-232 message1 GX-1234 message2 PER-10 message3" | grep -Eo '[A-Z]+-[0-9]+'
PA-232
GX-1234
PER-10