=====unix Keyword 2=====
dot files

====Definition====
A dot file is a file that is not normally visible using a basic ls command.  These files tend to be configuration files for other programs, but not always.

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

  * Reference 1
  * Reference 2
  * Reference 3



=====unix Keyword 2 Phase 2=====
pipes

====Definition====
In Unix, a pipe (or pipeline) is used to direct the flow of output from one command as input to another command. This can be used to connect two operations together on a single command line, instead of having to use multiple command line inputs to receive the same result.  

In Unix systems, pipes are shown using a vertical bar symbol, |.  This bar will take the output from the command on the left, and use it as the input for the command on the right.

An example of this would be:
<cli>
who | grep $USER
</cli>
This would execute the who command, and then use it as input to the grep command, which would parse who for all instances of your own username.

====References====

  * [[http://en.wikipedia.org/wiki/Pipeline_(Unix)]]

====Demonstration====
<cli>
lab46:~$ who | grep $USER
mowens3  + pts/22       2012-10-25 14:00   .          4935 (grrasp.offbyone.lan
lab46:~$
</cli>