Investigate some of the C shell variables as follows: a. Printout a screenshot that shows the difference between having thenoclobber variable set and not. To do this, set noclobber and tryto use the cat command to put text in a file that already exists.Then, unset noclobber and do the same thing.
b. Print out screenshot(s) that show the result of setting theprompt to different values as indicated. Remember that you canchange the prompt to include the result of a UNIX command if youinclude the command name in backquotes. To get credit for eachstep, you must have the screenshot show the command
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