I have heard about Over the Wire quite some time ago, but never had the time to delve into the war games, however, I finally got the weekend to myself and beat Bandit. It's a very nice warmup, but without further ado, let's get into it.

[Note: I will not release the answers, just solutions to find the answers.]

Level 0

ssh bandit0@bandit.labs.overthewire.org
        bandit0@melinda:~$ ls
        readme
        bandit0@melinda:~$ cat readme
        

Level 1

ssh bandit1@bandit.labs.overthewire.org
        bandit1@melinda:~$ ls
        -
        bandit1@melinda:~$ cat ./-
        

Level 2

ssh bandit2@bandit.labs.overthewire.org
        bandit2@melinda:~$ ls
        spaces in this filename
        bandit2@melinda:~$ cat spaces\ in\ this\ filename
        

Level 3

ssh bandit3@bandit.labs.overthewire.org
        bandit3@melinda:~/inhere$ ls -la
        total 12
        drwxr-xr-x 2 root    root    4096 Jun  6  2013 .
        drwxr-xr-x 3 root    root    4096 Jun  6  2013 ..
        -rw-r----- 1 bandit4 bandit3   33 Jun  6  2013 .hidden
        bandit3@melinda:~/inhere$ cat .hidden
        

Level 4

ssh bandit4@bandit.labs.overthewire.org
        bandit4@melinda:~$ cd inhere
        bandit4@melinda:~/inhere$ ls -hal
        total 48K
        -rw-r----- 1 bandit5 bandit4   33 Jun  6  2013 -file00
        -rw-r----- 1 bandit5 bandit4   33 Jun  6  2013 -file01
        -rw-r----- 1 bandit5 bandit4   33 Jun  6  2013 -file02
        -rw-r----- 1 bandit5 bandit4   33 Jun  6  2013 -file03
        -rw-r----- 1 bandit5 bandit4   33 Jun  6  2013 -file04
        -rw-r----- 1 bandit5 bandit4   33 Jun  6  2013 -file05
        -rw-r----- 1 bandit5 bandit4   33 Jun  6  2013 -file06
        -rw-r----- 1 bandit5 bandit4   33 Jun  6  2013 -file07
        -rw-r----- 1 bandit5 bandit4   33 Jun  6  2013 -file08
        -rw-r----- 1 bandit5 bandit4   33 Jun  6  2013 -file09
        drwxr-xr-x 2 root    root    4.0K Jun  6  2013 .
        drwxr-xr-x 3 root    root    4.0K Jun  6  2013 ..
        bandit4@melinda:~/inhere$ for f in ./*; do cat $f; done
        ?S?U??1?&?????ɦ?7??n?|???/?$?Q?J
        ??NO2???s??=\?1?OF???
        4?<?o?l?????՚?~{b?W?$?s<??~(????Å?8??b
                                              dhz??c?
                                                     g7?!?x?Ӈ???Eo[??B?
                                                                       ??&6]U?w޽RZ!N?o?h??)??'߳e?l??-p#?s???~?$???????<??Dj?N#C????0?|???T????G?@???koReBOKuIDDepwhWk7jZC0RTdopnAYKh

        ????dC?g?b?.<??"Q 2B????{????3S?~і?????|?M?^߮?-%ƌ

        ????"^??kU
        

Level 5

ssh bandit5@bandit.labs.overthewire.org
        bandit5@melinda:~$ cd inhere
        bandit5@melinda:~/inhere$  find -readable -size 1033c ! -executable
        ./maybehere07/.file2
        bandit5@melinda:~/inhere$ cat ./maybehere07/.file2
        

To be continued...