the question about copy

I want to copy one file to different folders at the same time. Can somebody tell me how to deal with it ?
For example, copy "hf.txt" to f01, f02, f03,... f99.
Thanks a lot!

Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.
so you can do like this
find <start_directory>  -exec cp {} \;

Thank you for your help. But I want to copy one source to multiple directories at the same time. Is it possible ?

find . -name "f[0-9][1-9]" -type d -print -exec cp hf.txt {} \;

note:
. :is current directory
-type d :means only find directory
-print : You should use this when use -exec
{} \;  :You should  put these at end of command line when use -exec and there is a blank between } and \.

CPU will run the command one by one, so you never do 2 or more things at the same time.

for dest in `seq -w 99`
do
   cp hf.txt f${dest}
done