fjfs (file-join-fs a.k.a. fudge-fs)
fjfs is FUSE module that implements virtual joining of multiple files as one.
fjfs is released under BSD license.
fjfs depends on libfuse - http://fuse.sourceforge.net/
fjfs is controlled using command line parameters.
Usage: fjfs [file-list-options] [options] mount-point-file file-list
Note: file-list depends on the options described bellow.
File list options:
-f --file | file-list is text file containing list of files (default).
-g --glob | file-list is glob (*, ?, dir/file*).
-a --args | file-list is N filenames (file1 file2 fileX).
-o --allow-other | Mount FUSE with allow_other option. This allows other users
. to access the mounted fjfs instance. /etc/fuse.conf must
. contain "user_allow_other" in order for this option to work.
The development is tracked using git. The repository is hosted at github
Clone git repository and then run "make".
git clone git://github.com/gfto/fjfs.git
Install fjfs with "make install".
To use it:
1. Install the FUSE module
sudo modprobe fuse
2. Create the list of files to join
echo /etc/group >> filelist.txt
echo /etc/issue >> filelist.txt
echo /etc/passwd >> filelist.txt
3. Mount fjfs
fjfs joined.txt filelist.txt
4. Check the result with
You will see the contents of all the files listed in filelist.txt
5. Unmount the fs
fusermount -u joined.txt && rm joined.txt
Join files listed in filelist.txt as test-mount.txt
fjfs test-mount.txt filelist.txt
Join files named testfile*.txt as test-mount.txt
fjfs --glob test-mount.txt 'testfile*.txt'
Join files named testfileX.txt testfileY.txt testfileZ.txt as test-mount.txt
fjfs --args test-mount.txt testfileX.txt testfileY.txt testfileZ.txt
Official releases can be downloaded from fjfs home page which is
For patches, bug reports, complaints and so on send e-mail to