Sorting bash output?

Question

bash

Hello! I have bash output in the format:
line1 22
line2 32
line3 444
Please help me. You need to assign the maximum value to the variable, and delete all the rest.

Answer 1

max=$(cut -d" " -f2 dat.txt|sort|xargs|rev|cut -d" " -f1)

This is if the data is in the dat.txt file