====== Make a file Executable ======
<color darkorange>2016</color>

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Unlike Windows, Linux does not have files that are executable, all files can have this attribute. So for example, I have a python file that is just a text file, and I will to be able to run this from the command line, If I look at the file using ls -al:
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    ls -al
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I will see something like this:
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    "-rw-r--r-- 1 pi pi 4452 Jul 25 17:46 40x2_LCD.py"
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The permissions for this file are:
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    "-rw-r--r--"
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This file has three sets of permissions:
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    User -rw  |  Group -r-  |  Others r--
    
    where r is read - w is write - x is execute
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I will cover permissions in another section, to give this file 'everything' use the following:
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    chmod 777 40x2_LCD.ph
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If we look at the permissions now by using:
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    ls -al
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We will see:
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    "-rwxrwxrwx"
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Now we can execute this file (assuming it contains something valid that is executable)
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    ./40x2_LCD.ph
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The file will now be executed.
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