Disk usage on /

Command: df -lkP -x tmpfs 

	df displays the amount of disk space available on all currently
	mounted file systems

	-k     like --block-size=1K

	-l, --local
	      limit listing to local file systems

	-P, --portability
	      use the POSIX output format

	-x, --exclude-type=TYPE
	      limit listing to file systems not of type TYPE