While some may argue about the ideal temperature for data centers and server rooms, one thing they do agree on is the need to monitor the environmental conditions of the space in which the organizations most expensive and sensitive assets reside.  

High quality rack mountable enterprise grade monitoring systems can start at around $1000.  They will call, email, and text based on a wide range of criteria and they are capable of monitoring internal and external data including light levels and airflow.

This week I got the Bank Project ATM GUI fully operational; flow was a big issue there and I also learned that the StringBuilder doesn't behave quite the way I expected it to, so I used Strings for the output area and text field instead.  (I thought I could delete existing text and then rebuild it, say to use the calculator input for different variables, like customer ID and amount - but the String class ended up being the better option.  It would work the way I expected it to until one customer finished using the ATM and the next one started; it was even OK for multiple transactions for the same customer but wouldn't reset correctly.  There may be a way to use StringBuilder that way, but I tried lots of things and nothing seemed to work).

 On a Linux host the web root directory, that is the directory where all the html files are stored, is located in /var/www

There are times when you may wish to change this location, or at least there have been times when I have found it necessary.  As with many other applications on Linux or Unix achieving your desired modification is as simple as editing an ASCII file.  The problem is always which one to edit and how.  Here is how I was able to accomplish the goal of changing web root from /var/www to /var/www/foo