NAME

       sqfsdiff - compare two squashfs images by contents and metadata

SYNOPSIS

       sqfsdiff [OPTIONS...] --old <first> --new <second>

DESCRIPTION

       Compare  two  squashfs images. In contrast to doing a direct diff of the images, this actually parses the
       filesystems and generates a more meaningful difference report.

       If only contents are compared, any differences in packed file layout, ordering, compression,  inode  meta
       data  and  so  on  is ignored and the two images are considered equal if each directory contains the same
       entries, symlink with the same paths have the same targets, device nodes the same device number and files
       the same size and contents.

       A report of any difference is printed to stdout. The exit status is similar  that  of  diff(1):  0  means
       equal, 1 means different, 2 means problem.

       Possible options:

       --old, -a <first>
              Specify  the  first  filesystem  image  or  source  directory,  relativ  to  which the changes are
              evaluated.

       --new, -b <second>
              Specify the second filesystem image to source directory to compare to the first one.

       --no-contents, -C
              Do not compare file contents.

       --no-owner, -O
              Do not compare file owners.

       --no-permissions, -P
              Do not compare permission bits.

       --timestamps, -T
              Compare file timestamps.

       --inode-num, -I
              Compare inode numbers of all files.

       --super, -S
              Also compare meta data in super blocks.

       --extract, -e <path>
              Extract files that exist in both images but have different contents to  the  specified  directory.
              Contents  of  the  first  image end up in a sub directory named old and the contents of the second
              image in a sub directory named new.

       --help, -h
              Print help text and exit.

       --version, -V
              Print version information and exit.

EXIT STATUS

       The exit status is similar that of diff(1): 0 means equal, 1 means different, 2 means problem.

SEE ALSO

       rdsquashfs(1), sqfs2tar(1)

AUTHOR

       Written by David Oberhollenzer.

COPYRIGHT

       Copyright  ©  2019  David  Oberhollenzer  et  al  License  GPLv3+:   GNU   GPL   version   3   or   later
       <https://gnu.org/licenses/gpl.html>.
       This  is  free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent
       permitted by law.

sqfsdiff                                           August 2019                                       SQFSDIFF(1)