clean up mac cache files

gistfile1.sh

echo "clean up start >>>>>>>>>>>>>>>>>>>>>>"
clear
df -h
echo "clean desktop..."
rm -rf ~/Desktop/*

echo "clean download..."
rm -rf ~/Downloads/*

echo "clean trashcan..."
rm -rf ~/.Trash/*

echo "clean user library cache..."
rm -rf ~/Library/Caches/*

echo "clean system library cache..."
rm -rf /System/Library/Caches/* 
df -h

echo "clean up finished===================="