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There are a few websites that allow you to code in a online editor, and then it compiles on a server and displays the output.

I am guessing they are using docker and/or lxc to create a safe environment and isolate it for each session.

How do they display exactly what the terminal is displaying like e.g. the compile errors or the running output?

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  • A command line compiler will output to stdout/err ... Commented Jan 4, 2016 at 15:11
  • @AlexK.ok, so how do you redirect or save that output to display on a webpage? Commented Jan 4, 2016 at 15:26
  • Depends on your language, E.g. proc_open in PHP - stackoverflow.com/questions/5631600/… Commented Jan 4, 2016 at 15:30
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