Listing in Terminal the last mounted volume Attach(1)ing different copies of the same dmg file create in /Volumes folders representing each image. Let the first image be called Image; the subsequents will receive an incrementing number in their tail, e.g. Image 1, Image 2 and so on. 

However, detaching Image 1 and then attaching another instance will recycle the the numerical id, so that my last image will actually be Image 1. 

This means that I cannot rely on ls(1)'s output (by default sorted lexicographically) to determine the last mounted image. I don't seem to have more success with ls -U or diskutil's output either. 

I may very well be missing something. Is there any way to reliably determine in bash the latest mounted image? Thank you.
The last line from the output of mount would be the last filesystem mounted.