CLI Variables

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Assignment and Dereferencing

To assign a value to an environment variable you simply type the variable name, '=', then the value. For example,


To get the value of the variable (i.e. dereference) you place a '$' before the variable name.

#echo $FOO
#echo $BAR


env  = Shows you the environment variables that are currently defined.
echo = Displays a line of text.


  1. What is the value of the "HOME" environment variable?
  2. How would you create an environment variable named GEEK that has the contents- "FREE GEEK is the best!"?
  3. Using the GEEK environment variable, how would you echo the statement, "I think that FREE GEEK is the best!"?