=====unix Keyword 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

=====unix Keyword 2 Phase 2=====
tab completion

====Definition====
Definition (in your own words) of the chosen keyword.

====References====
List any sites, books, or sources utilized when researching information on this topic. (Remove any filler text).

  * Reference 1
  * Reference 2
  * Reference 3


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

If you wish to aid your definition with a code sample, you can do so by using a wiki **code** block, an example follows:

<code c>
/*
 * Sample code block
 */
#include <stdio.h>

int main()
{
    return(0);
}
</code>

Alternatively (or additionally), if you want to demonstrate something on the command-line, you can do so as follows:

<cli>
lab46:~$ cd src
lab46:~/src$ gcc -o hello hello.c
lab46:~/src$ ./hello
Hello, World!
lab46:~/src$ 
</cli>