PROBLEM
This one is a little bit harder. Can you find the flag in /problems/grep-2_2_413a577106278d0711d28a98f4f6ac28/files on the shell server? Remember, grep is your friend.
HINT
grep tutorial
SOLUTION
If you'll go to the given directory and run ls command you'll see that there are multiple directories now obviously we cannot get into all those directory and find the flag, manually well that is why it's called grep
Run
> grep "picoCTF" */*
> files2/file16:picoCTF{grep_r_and_you_will_find_8eb84049}
Here */* means that you want to go into directories recursively.
FLAG - picoCTF{grep_r_and_you_will_find_8eb84049}