RM -файлы с расширением
find . -name "*.bak" -type f -delete
GutoTrosla
find . -name "*.bak" -type f -delete# print all files recursively with exstension .bak
find . -name "*.bak" -type f
# add -delete command at the end to delete them
find . -name "*.bak" -type f -delete