# m h  dom mon dow   command
# remove ~/Downloads dir
* * * * * rm -rf ~/Downloads;
# remove downloaded files without access in last 60 minutes
* * * * * find ~/downloads/* -name "*" -amin +60 -delete;
# mv files in home dir to download dir
0 * * * * find ~/ -maxdepth 1 -type f ! -name '.*' -exec mv {} ~/downloads/ \;