Find file that matches today's date in filename and move to /tmp in bash

I'm having problems with my bash script. I would like to find a file matching today's date in the filename, i.e. my_file_20120902.txt and then move it to a different directory, i.e. /tmp. Thanks.

Try:

mv *$(date +%Y%m%d)* /tmp

with bash, ksh, or sh.