Comparing files, folders and text sources

https://www.jetbrains.com/help/idea/comparing-files-and-folders.html

Compare folders

1. Select the folders you want to compare in the Project tool window.

2. From the context menu, choose Compare Directories, or press Ctrl+D.

3. Use the following toolbar buttons to filter the list:

   • 
     : click to display files that are present in the left folder, but are missing from the right one.

   • 
     : click to display files that are present in the right folder, but are missing from the left one.

   • 
     : click to display files that are present in both folders, but whose contents, timestamp or size are different.

   • 
     : click to display files that are present in both folders and that are identical with regard to the option selected in the Compare by dropdown.

来源：https://www.cnblogs.com/kakaisgood/p/12175604.html