If you are a geek who has experience in Linux, you would know exactly what I’m talking about. If not, environment variables are a set of predefined variables that make system functional properly. The same also applies in Windows, though, as normal user, you don’t really need to worry about them.
Recently, I was looking at some Android documentation and trying to set up a development environment on my Windows 7. One of the steps is to add a directory path into the PATH environment variable. I had to admit that Google didn’t put much effort into the documentation to make us go through it easily.
To install the SDK, simply unpack the starter package to a safe location and then add the location to your PATH.
No explanation on how to do this.
So how exactly are you going to do this?
To add or edit anything environment variables in Windows 7, you need to go to System Properties first.
Then, go to “Advanced system settings”,
Under “Advanced” tab, click on “Environment Variables …” button at bottom.
Double click PATH and add new path into the “variable value”. Make sure you separate the value with “ ; “
Let’s sum up what we just did
PATH is an environment variable that holds all the executable shell commands. When you type something in the command prompt, it will go through all the path and search for the match of the command line utility name you have just entered.
In short, there are tons other environment variables in Windows, if you are interested in how it works, you can go to Technet documentation and check out.
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