[Bandit] Lv.9 -> Lv.10

Level Goal The password for the next level is stored in the file data.txt in one of the few human-readable strings, preceded by several ‘=’ characters. 1. strings extracts and displays only human-readable strings from a file, but the output was still too much to make sense of. 2. Since the problem mentioned that the password line contains several '=' characters, I used grep to filter for them - and it showed up immediately.