windows
For some reason Web does not include tzutil. You must have R2 to access this utility.
This is frustrating because I need to change the time according to different timezones.
How can I use the "time" command to change the time based on an input timezone (like GMT-6 or possibly "Central Standard Time") ?
Similar to OS detection, each web server has slight quirks and different behaviors under some conditions that can be detected. I don't know the precise methods of the top of my head. This is frequently done by sending invalid or unusual requests and seeing what the error message or the response is. Apache might handle a particular invalid request slightly differently from IIS.
Some of this will be masked if you have a reverse proxy or load balancer in the path. Instead of learning about your web server the curious person would learn what proxy your using.
Best Answer
Windows Vista and Server 2008 RTM did not ship with a way to change time zones via script. Microsoft fixed this by releasing KB2556308. This hotfix will give you the TZUtil command-line tool.