How can I display the number of lines in the idea?

In most text editors and integrated development environments, you can find the option to display line numbers by viewing the editor’s status bar or settings.

In most cases, you can find options like “View” or “Edit” in the menu bar of the editor, and then choose “Show Line Numbers” or “Line Numbers” to display the line numbers.

If you are using a command-line text editor like Vim or Emacs, you can display line numbers by entering specific commands or pressing keys. In Vim, you can type “:set nu” to display the line numbers, and in Emacs, you can press “M-x linum-mode” to display the line numbers.

In general, the method of displaying line numbers depends on the text editor or integrated development environment you are using, and you can usually find the option to enable line numbers in the editor’s settings or menu.