How to use 'readarray' in bash to read lines from a file into a 2D array

Question

Let\'s say I have a text file \'demo.txt\' who has a table in it like this:

1 2 3    
4 5 6    
7 8 9    

Now, I want to read each line separat

Answer 1

To expand on Damien's answer (and because I can't submit comments yet...) you just iterate on read. What I mean is something like the following

exec 5

I hope you found a solution already (sorry to bump...). I stumbled upon this page while helping teach a friend and figured others may do the same.