Bandit Level 9-10
This time we have to find one of the few strings that are actually readable. The one that interests us is the one starting with multiple equal signs at the begining.
The strings command outputs all of the strings in the file. Then we can find all of the output that interests us using grep, which will display only data which interests us.
strings data.txt | grep ====
output: ========== the*2i"4 ========== password Z)========== is &========== ---flag---