You know  how on Windows XP, you could copy a big directory tree from one directory/drive/machine and sometimes the copy doesn’t complete.  Maybe your Wi-Fi cut out during the large copy.  You’re left with the task of re-starting the entire copy operation.

Or perhaps you just want to do a copy of one set of files over another set of files but only care about creating new files, not updating changed files.

Then you have surely faced the Confirm File Replace dialog numerous times because of all the existing files.  But are you going to click “No” every single motherf’in time?  In the past, I just clicked “Yes to all”–even if that was just a waste of the computer’s time, my own time wasn’t wasted and I could do something else like write poetry.

But actually, there is a hidden option “No to All”,  as explained by LifeHacker.  You just hold the SHIFT key and click the “No” button in the Confirm File Replace dialog.