I was actually looking how to check free space in Raspberry. The linux df command helps to check the disk file system.
You can try df -BM to get the disk space .
Raspberry Pi Using ‘-h‘ parameter with (df -h) will shows the file system disk space statistics in “human readable” format, means it gives the details in bytes, mega bytes and gigabyte. For more details on Df command visit http://www.tecmint.com/how-to-check-disk-space-in-linux/
