How to extract last part of string in bash?

Question

I have this variable:

A="Some variable has value abc.123"

I need to extract this value i.e abc.123. Is this possible i

Answer 1

As pointed out by Zedfoxus here. A very clean method that works on all Unix-based systems. Besides, you don't need to know the exact position of the substring.

A="Some variable has value abc.123"

echo $A | rev | cut -d ' ' -f 1 | rev                                                                                            

# abc.123