I was recently needed to delete a large number 10,000,00 files in one of folder running on Linux CentOS.

I was running the below command inside the folder

 rm -rf * 

but it was giving me below error message:

bash: /bin/rm: Argument list too long

I could not remove them, I take help of Linux  find . command. It is slow but it did work for me:

find . -ls -exec rm {} \;