history cat .bash_history
grep --color=auto -rnw '/' -ie "PASSWORD" --color=always 2> /dev/nullf find . -type f -exec grep -i -I "PASSWORD" {} /dev/null \;
Run linPEAS if nothing shows up manually
Sometimes the path is right in front of us like a file right in the home directory. Especially in a CTF situation, enumeration on very piece of information given will lead to success... AVOID RABBIT HOLES.
