How to list specific type of files in recursive directories in shell?

Question

How can we find specific type of files i.e. doc pdf files present in nested directories.

command I tried:

$ ls -R | grep .doc

but if th

Answer 1

Some of the other methods that can be used:

echo *.{pdf,docx,jpeg}

stat -c %n * | grep 'pdf\|docx\|jpeg'