ssh -i bandit26.sshkey -t bandit26@localhost /bin/sh [doesn't work]
cat /etc/shells <-- Display shells on system

bandit25@bandit:/home/bandit26$ cat /etc/shells
# /etc/shells: valid login shells
/bin/sh
/bin/dash
/bin/bash
/bin/rbash
/usr/bin/screen
/usr/bin/tmux
/usr/bin/showtext

^^^ showtext seems to be unique...

bandit25@bandit:~$ /usr/bin/showtext
more: stat of /home/bandit25/text.txt failed: No such file or directory [because we're not logged into bandit26...]

bandit25@bandit:~$ strings /usr/bin/showtext
#!/bin/sh
export TERM=linux
more ~/text.txt
exit 0

ssh -t localhost -l bandit26 -i bandit26.sshkey bash --norc [doesn't work]