Tar: Failed to open /dev/sa0
From Leo's Notes
					 Last edited on 24 February 2017, at 19:14.
					
				If you are getting an error similar to:
tar: Failed to open '/dev/sa0'
while trying to extract an archive piped to tar like:
cat archive.tar | tar -x
You probably want to define -f - to tell tar to extract from stdin.
cat archive.tar | tar -xf -