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=====unix Keyword 2=====
here string

====Definition====
The symbol for a here string is <<< . A here string puts whatever input you want into a command. Like bc <<< 2+2 sends 2+2 into the calculator and it will come back as 4. So it does the operation in one step instead of going into the calculator and typing 2+2 or whatever you want to solve.

====References====
* Notes from when we talked about here strings and the binary calculator.



=====unix Keyword 2 Phase 2=====
variable expansion

====Definition====
Variable expansions are defined by lines using ':=' It does not contain any references to other variables; it contains their values as of the time this variable was defined. 
====References====
List any sites, books, or sources utilized when researching information on this topic. (Remove any filler text).

  * Reference 1: http://www.chemie.fu-berlin.de/chemnet/use/info/make/make_6.html
  * Reference 2
  * Reference 3

====Demonstration====
Demonstration of the indicated keyword.


<code c>

#include <stdio.h>

int main()
{
        int x = 20;

        printf("The value of x is %d\n", x);
}

</code>

The output of this is The value of x is 20

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