Linux fdupes: Get Rid (Delete) Of Double Duplicate Files In Directory

by on February 3, 2010 · 14 comments· LAST UPDATED February 7, 2010


How do I find duplicate files in a given set of directories and delete them using a shell script or a command line options? How do I get rid of double duplicates files stored in ~/foo and /u2/foo directory?

You need to use a tool called fdupes. It will searche the given path for duplicate files. Such files are found by comparing file sizes and MD5 signatures, followed by a byte-by-byte comparison. fdupes is a nice tool to get rid of duplicate files.

Install fdupes

Type the following command under Debian / Ubuntu Linux:
# apt-get install fdupes
Type the following command under Redhat / RHEL / Fedota / CentOS Linux, enter (turn on rpmforge repo before running the following yum command):
# yum install fdupes

How Do I Use fdupes?

Find duplicate files in /etc/ directory, enter:
# fdupes /etc
Sample outputs:


How Do I Delete Unwanted Files?

You can force fdupes to prompt you for files to preserve, deleting all others (use this with care otherwise you may loss data): # fdupes -d /etc
Sample outputs:

[1] /etc/vimrc
[2] /etc/virc
Set 1 of 1, preserve files [1 - 2, all]: 1
   [+] /etc/vimrc
   [-] /etc/virc

How Do Recursively Search Directory?

You can recursively search every directory given follow subdirectories encountered within the -r option, enter:
# fdupes -r /dir1

How Do I Find Dupes In Two Directories?

Type the command as follows:
# fdupes /dir1 /dir2
# fdupes -r /etc /data/etc /nas95/etc

How Do I See Size Of Duplicate Files?

Type the following command with the -S option:
# fdupes -S /etc
Sample outputs:

1533 bytes each:

Further readings:

  • man page fdupes
Tweet itFacebook itG+ itDownload PDF versionFound an error/typo on this page?

{ 14 comments… read them below or add one }

1 jason February 3, 2010 at 3:05 pm

cool. thx


2 Tech Observer February 4, 2010 at 5:40 pm

Thanks forgot that one, there’s always a guarantee that Debian will make it easier.
Do you know an equivalent with a GUI front end on Ubuntu?

Tech Observer


3 nixCraft February 4, 2010 at 6:08 pm

I don’t think so,

apt-cache search dupes
fdupes – identifies duplicate files within given directories
findimagedupes – Finds visually similar or duplicate images


4 Philippe Petrinko February 6, 2010 at 1:58 pm

  Hi Vivek
    Nice topic,
    Best regards,


5 Wido February 6, 2010 at 5:35 pm

Cool tool but, does it takes consideration in hard links? they are the same file, no a dup, but with different name


6 Name February 6, 2010 at 9:46 pm

I use fdupes with sed to output a shell file that will delete unwanted duplicates:
fdupes -r -n -S /directory | sed -r “s/^/#rm \”/” | sed -r “s/$/\”/” >

The shell file created by this has each line commented out. It’s just a matter of uncommenting the files you want to delete. I don’t recall where I first saw this idea – credit to original poster though.



7 Rajagopal February 7, 2010 at 11:29 am

I think the “yum install fdupes” is missing in the post

Great post, as usual.




8 nixCraft February 7, 2010 at 12:41 pm


Thanks for the heads up!


9 nixCraft February 7, 2010 at 6:33 pm


Yes, take a look at man page you will get the option to control soft and hard links.


10 gio February 12, 2010 at 2:36 pm

I’ve read about a similar tool, included in Ubuntu distro, with a GUI front end whose name is



11 荒野无灯 May 4, 2010 at 7:38 am

hello, happy to see your article.
I am intrested in what tools you are using to create PDF for posts .
could you tell ?
“Download PDF version”


12 haasdas February 29, 2012 at 9:08 pm

Try FSlint maybe. It has a GUI if you insist.

Hope it helps


13 James March 15, 2012 at 5:14 pm

I’m runnung CentOS 5 with fdupes v1.4. fdupes runs fine if i’m checking for duplicates on the Linux box itself. But I need to check for duplicates on an NFS mounted drive. When I run the command nothing seems to happen other than I get the command line again. I’m typing fdupes -r /dir1 /dir2
My nfs mount was mounted with the follwoing command mount -t nfs -o tcp ipaddress:/ifs /dupeChk

Thanks in advance for any help.


14 markbun June 13, 2013 at 9:24 pm

I’m using Duplicate Files Deleter for a year now it’s an easy fix .


Leave a Comment

Tagged as: , , , , , , , , , ,

Previous Faq:

Next Faq: