https://overthewire.org/wargames/bandit/bandit12.html - Chris Cooper wins the first meeting stumper with his use of tr to rotate a string by 13 char positions: `cat data.txt | tr 'A-Za-z' 'N-ZA-Mn-za-m'`. Much wow!
https://overthewire.org/wargames/bandit/bandit26.html - Chris Cooper amazes the crowd by reducing his terminal size so he can interrupt a devious default shell running `more`, then entering vi mode to set a shell of his choosing.
https://overthewire.org/wargames/bandit/bandit31.html - team was a little derailed by a git tag ref that had no tree. Chris saved the day with `git show <tag>` as the password was in the tag metadata... groans abounded.