creating readme used the command ssh bandit0@bandit.labs.overthewire.org -p2220

level 1: password was boJ9jbbUNNfktd78OOpsqOltutMc3MY1. used cat to read the readme.

level 2: used cat ./- to read readme. Password was CV1DtqXWVFXTvM2F0k09SHz0YwRINYA9

level 3: used cat "spaces in this filename" to read readme. Password was UmHadQclWmgdLOKQ3YNgjWxGoRMb5luK.

level 4: used ls -a to search for hidden files. Password was pIwrPrtPN36QITSp3EQaw936yaFoFgAB