Level Information** > [!important] The password for the next level is stored in the file **data.txt** and is the only line of text that occurs only once. > > > > **Commands you may need to solve this level:** > > - grep, sort, uniq, strings, base64, tr, tar, gzip, bzip2, xxd Upon looking into `data.txt`, there are too many lines to manually sort through. Piping the output into the `sort` function will sort the lines alphabetically. The `uniq -u` function will output the lines that occur once only. The full command for this one is: ```Bash cat data.txt | sort | uniq -u ``` ![[Level 08 - 09.png]]