Find mp3 files containing the word fish in the filename, ‘below’ current older

find . -iname *fish*.mp3

Use Grep to find a string within a file, and don’t return the filename only the examples and then find only the distinct examples.

grep -rh --include="*.R" "library("  . | sort --unique

This example was to help me remember the name of a library I had used somewhere in one of my .R files but I couldn’t remember which one etc. the library I was looking for was called “tabplot”