How to recursively delete all files of a specific extension in the current directory

Run following command first to see exactly which files you will remove. 

find . -name "*.bak" -type f

Also, make sure that -delete is the last argument in your command. If you put it before the -name *.bak argument, it will delete everything. 

But use it with precaution. 

find . -name "*.bak" -type f -delete