Linux is a very complex operating system and provides a lot of usefull tools and commands. Just a few simple linux console commands to find files in Linux OS (regular search or recursive search):
Find files recursively
#print all files in a directory, recursively
find ./ -type f -follow -print
Search for a string and delete all files containg that string, recursively:
grep -lrIZ "searched string" . | xargs -0 rm -f --
Find files recursively, by extension
#print all files, recursively, by extension
find . -type f -name "*.jpg"
