Wikipedia has a reasonable listing of them, as do many other sites. Various terminals support different subsets of these codes, and it's difficult to find a "authoritative" list of what every code does.
These are special codes that your program can print in order to give the terminal instructions.
The way that most programs interact with the Unix terminal is through ANSI escape codes. If you enjoyed the contents on this blog, you may also enjoy Haoyi's book Hands-on Scala Programming
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This post will explore the basics of how you can control the terminal from any command-line program, with examples in Python, and how your own code can directly make use of all the special features the terminal has to offer.Ībout the Author: Haoyi is a software engineer, and the author of many open-source Scala tools such as the Ammonite REPL and the Mill Build Tool. There are libraries like Readline, JLine, or the Python Prompt Toolkit that help you do this in various programming languages, but you can also do it yourself.
This is what lets programs like Git implement its dynamic progress indicators, and Vim or Bash implement their editors that let you modify already-displayed text without scrolling the terminal. Strategic Scala Style: Designing Datatypes Scala Scripting and the 15 Minute Blog EngineĮveryone is used to programs printing out output in a terminal that scrolls as new text appears, but that's not all your can do: your program can color your text, move the cursor up, down, left or right, or clear portions of the screen if you are going to re-print them later.
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