Level goal
The password for the next level is stored in the file data.txt, which contains base64 encoded data.
Login
ssh bandit10@bandit.labs.overthewire.org -p 2220
FGUW5ilLVJrxX9kMYMmlN4MgbpfMiqey
Doc
base64 (1) - base64 encode/decode data and print to standard output
-d, --decode decode data
Solution
Use the -d flag (decode) on the data.txt file by using the base64 command.
bandit10@bandit:~$ base64 -d data.txt
The password is dtR173fZKb0RRsDFSGsg2RWnpNVj3qRr