Recursively look for files with a specific extension

Question

I\'m trying to find all files with a specific extension in a directory and its subdirectories with my bash (Latest Ubuntu LTS Release).

This is what\'s written in a

Answer 1

find $directory -type f -name "*.in"

is a bit shorter than that whole thing (and safer - deals with whitespace in filenames and directory names).

Your script is probably failing for entries that don't have a . in their name, making $extension empty.