- Create a new folder on your desktop called ss
- Open Terminal
- Type the following command (change
mdsto your own user name):
defaults write com.apple.screencapture location /Users/mds/Desktop/ss
- Now type
You can substitute ss for any folder name you'd like. If you want to revert back, follow the same steps above, but remove /ss in Step 3.
I found out how to do this here.