I have read that this is possible on Windows using Win32DiskImager.exe but I'm looking for a Linux (Mint) based solution. I have downloaded the latest distribution and configured it with the software I need and now I'd like to make a *.img file of it - ideally with the ability to not include unallocated sectors as Win32DiskImager.exe apparently does. Is this possible on Linux?
image.isofile. Notice that Pi images use the prefix
.img. See also: raspberrypi.stackexchange.com/a/51100/5538