Bandit 8
Challenge
The password for the next level is stored in the file data.txt and is the only line of text that occurs only once
Approaches
Since we know the line of text only occurs once, we can probably cat the text, then use the uniq command to find the uniq value. As it turns out, there is a handy --count switch we can use to figure out how many times a string shows up. One thing I did realize was that i needed to sort the list before passing to uniq otherwise it would not tally the counts properly.
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bandit8@bandit:~$ ls -la
total 56
drwxr-xr-x 2 root root 4096 Feb 21 22:03 .
drwxr-xr-x 70 root root 4096 Feb 21 22:04 ..
-rw-r--r-- 1 root root 220 Jan 6 2022 .bash_logout
-rw-r--r-- 1 root root 3771 Jan 6 2022 .bashrc
-rw-r----- 1 bandit9 bandit8 33033 Feb 21 22:03 data.txt
-rw-r--r-- 1 root root 807 Jan 6 2022 .profile
bandit8@bandit:~$ cat data.txt | sort | uniq -c
10 06JGEzd0h7SG9ezN0TNJ4HiObh9NFrjA
10 11f8uKsc6DxBivROEF8Uifg1mMKD6usK
10 26nn1hqu3aiBMnRrS0BHAVsNmT0NWOYL
10 2Kwg7gB03cpPvMklMtGz9OjfSkOF82tW
10 2PKvVpiRjaQl1KgbufZZqmlbyQeS7Agx
...
10 eiI4YqWjOEej0dYPvJFk5HR0wdVZQbJv
1 FLAG_FLAG_FLAG_FLAG_FLAG_FLAG_FL
10 eqQvViWw3MSA8eHfMlTpk2Cw23TGv9X5
...
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