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In the Arduino IDE: How can I get the line numbers shown in a sidebar of the editor?

It is hard to find which line my errors are referring to without them...

I am using Arduino IDE on a form of Windows.

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  • @crabman84, how do you know that the the person who posted this question > 2 years ago was using Windows? – Duncan C May 3 '20 at 20:28
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Go to File > Preferences. Under the Settings tab, click the checkbox for Display line numbers.

Options in arduino ide to show the lines on the code

Keep in mind that this option is available in the latest version of the Arduino Integrated Development Environment (v1.6.6). In case you are using GNU/Linux distribution is recomended to use the one that is NOT in the distribution's repositories but the one that is offered in https://www.arduino.cc/en/Main/Software

If you are using a Linux OS this solution may not work. Look at the 'preferences.txt' where you can edit your preferences in a file without a GUI.It will display all possible options available for your current version of Arduino IDE on your OS. It is usually in the '.arduino' folder which may be in your 'home' folder.

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