We found a program that is hiding a flag but requires you to guess the number it is thinking of. Chances are Linux has an easy way to try all the numbers... Go to /problems/995871fcb203d3e223e9e4aaa65e4053 and try it out!
Hints: Either use SSH or use the Web Shell to get onto the shell server and navigate to the correct directory. Then do a quick Google search on 'bash loops'. You may need to use grep to filter out the responses as well!
The only tricky part to this one was that I was an imbecile and tried to make a python loop, instead of a bash loop. I kept trying to either run a python file or run the python in the terminal. The command I used was "for i in {1..4096}; do ./bashloop $i ; done". I did CTRL-C once I saw a longer line than everything else, and boop boop kachoop, there was the flag.