This post concerns the folder located at the following file path:
I right-clicked this folder in Finder.app and selected Get Info. After several minutes of waiting, the "Size" field still stated, "Calculating size."
So, I ran the following command in Terminal.app to get this folder's file size:
sudo du -sh /.DocumentRevisions-V100
This informed me that this folder takes up 70 GB on my rMBP.
After searching online, I learned that this folder is said to contain automatic back-up versions of files. However, I do not know how this works, exactly. My understanding is that once a window is closed or an application is Quit, then one can no longer click Undo to revert to previously saved states.
So, my first question is, how does one actually access these file back-ups? For example, when I pull up an old .rtf file in TextEdit.app, I see no option to "Revert to a previously saved version of this document."
In my view, 70 GB is a significant amount of space. I would like to clear up this space on my Macintosh HD. I recognize that one should delete system files with caution. Is it okay to delete this "DocumentRevisions-V100" folder?
What exactly will happen if this folder is gone? I do not see its purpose or value.
OS X El Capitan, version 10.11.6.