How to display and write to a variable?

Question

linux

There is a code

echo step 1 && sleep 5 && echo step 2 && sleep 5 && echo step 3 && sleep 5 && echo finish

To store the result in a variable, do this

res=`echo step 1 && sleep 5 && echo step 2 && sleep 5 && echo step 3 && sleep 5 && echo finish`
echo $res;

But then it will be displayed on the screen only upon completion, but how to make it so that it is displayed in the process of work and upon completion there is a variable with the result?

Answer 1

koxac , Treated by putting brackets around everything

(echo step 1 && sleep 5 && echo step 2 ) | tee /tmp/a.log

res=$(cat /tmp/a.log)
echo $resstep 1 step 2