find is a console command that is available on Linux and MacOS.

Recursively finding and removing all files based on name

find . -type f -name ".DS_Store" -delete

Finding only in the current directory, or any number of directories deep

find . -maxdepth 1 -type f -name ".DS_Store"

Specifying a list of filenames

find . \( -name "*.jpg" -o -name "*.JPG" -o -name "*.jpeg" -o -name "*.JPEG" \)

Case-insensitive search

find . -iname FileName.TXT