Solution by cnathansmith:
Simple walk-through to find a rather strange solution

Solution by pakcyberbot:
Answer rename file name to lnima run the below command ./lnima @

Solution by eletran:
not sure if this is the intended solution, but managed to get the flag anyway, so it's good enough for me.

Solution by BattleMoose:
.md file containing full walkthrough, c++ clone of the program and .py name generator. There are infinite solutions to this problem. Solution contains shortest possible solution as well.

Solution by NickHRSims:
``` bash -c "exec -a '.XXn' ./level1 @" ``` Notes explaining why this solution works attached