Get latest version of WebIOPi into Raspberry Pi - linux

The latest version of Webiopi is WebIOPi-0.7.1.tar.gz. It's on SourceForge. I have an earlier version installed on my Pi. I'd like to update it to the newer version. I don't know how to do that.
Also, I can't seem to find the webiopi.js client. Any ideas on that?
New to Linux. Thanks for your help. Pi is up and running, including WiFi, Apache 2.2, and secure terminal login (xterm?).

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https://answers.unity.com/questions/577249/linux-support-a-thing-or-not.html
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