Using 'find' to return filenames without extension

Question

I have a directory (with subdirectories), of which I want to find all files that have a \".ipynb\" extension. But I want the \'find\' command to just return me these filenam

Answer 1

find . -type f -iname "*.ipynb" | grep -oP '.*(?=[.])'

The -o flag outputs only the matched part. The -P flag matches according to Perl regular expressions. This is necessary to make the lookahead (?=[.]) work.