How can I permanently enable line numbers in IntelliJ IDEA?

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In IntelliJ IDEA, you can enable line numbers in the editor to be displayed permanently. Here's how you can do it:

  1. Enable Line Numbers:

    • Open IntelliJ IDEA.
    • Go to the menu bar and select View > Active Editor > Show Line Numbers.

    Alternatively, you can use the keyboard shortcut: Ctrl + Shift + A (or Cmd + Shift + A on macOS) to open the Find Action dialog, and then type "Show Line Numbers" to toggle line numbers on or off.

  2. Permanently Enable Line Numbers:

    • After enabling line numbers using the method above, they will be visible for the current editor session.
    • If you want to make line numbers permanently enabled for all editor sessions, follow these steps:
      • Go to the menu bar and select File > Settings (or IntelliJ IDEA > Preferences on macOS) to open the Settings/Preferences dialog.
      • In the left-hand panel, navigate to Editor > General > Appearance.
      • Check the "Show line numbers" option under the "Editor" section.
      • Click the Apply button and then OK to save your changes.

Now, line numbers will be permanently displayed in the editor for all future sessions.

Remember that these instructions might slightly vary depending on the version of IntelliJ IDEA you're using. The steps mentioned above are based on the general settings for enabling and permanently displaying line numbers in the editor.

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