Is there any unix commands that can display duplicate files in a particular directory.kindly let me know your comments.
You should be able to use fdupes to achieve this.
fdupes ./directory
That should list all the duplicate files in a directory, you can also pass it -r for a recursive scan into subdirectories.
来源：https://stackoverflow.com/questions/5321509/list-duplicate-files-in-a-directory-in-unix