Spoken Tutorials - Bash Assignment 
				Funded by the National Mission on Education through ICT
				       Indian Institute of Technology Bombay,
					       http://spoken-tutorial.org
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Basics of functions

1) Write a program with two functions: 
   a. The first function should display diskspace usage in human readable form.
      (Hint: df -h)
   b. The second function should display filesystem usage in human readable form.
      (Hint: du -h)