1SQFSDIFF(1)                      User Commands                     SQFSDIFF(1)
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NAME

6       sqfsdiff - compare two squashfs images by contents and metadata
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SYNOPSIS

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

12       Compare  two squashfs images. In contrast to doing a direct diff of the
13       images, this actually parses the filesystems and generates a more mean‐
14       ingful difference report.
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16       If  only  contents are compared, any differences in packed file layout,
17       ordering, compression, inode meta data and so on is ignored and the two
18       images  are  considered  equal  if each directory contains the same en‐
19       tries, symlink with the same paths have the same targets, device  nodes
20       the same device number and files the same size and contents.
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22       A  report  of  any  difference is printed to stdout. The exit status is
23       similar that of diff(1): 0 means equal,  1  means  different,  2  means
24       problem.
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26       Possible options:
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28       --old, -a <first>
29              Specify  the first filesystem image or source directory, relativ
30              to which the changes are evaluated.
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32       --new, -b <second>
33              Specify the second filesystem image to source directory to  com‐
34              pare to the first one.
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36       --no-contents, -C
37              Do not compare file contents.
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39       --no-owner, -O
40              Do not compare file owners.
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42       --no-permissions, -P
43              Do not compare permission bits.
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45       --timestamps, -T
46              Compare file timestamps.
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48       --inode-num, -I
49              Compare inode numbers of all files.
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51       --super, -S
52              Also compare meta data in super blocks.
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54       --extract, -e <path>
55              Extract  files that exist in both images but have different con‐
56              tents to the specified directory. Contents of  the  first  image
57              end up in a sub directory named old and the contents of the sec‐
58              ond image in a sub directory named new.
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60       --help, -h
61              Print help text and exit.
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63       --version, -V
64              Print version information and exit.
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EXIT STATUS

67       The exit status is similar that of diff(1): 0 means equal, 1 means dif‐
68       ferent, 2 means problem.
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SEE ALSO

71       rdsquashfs(1), sqfs2tar(1)
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AUTHOR

74       Written by David Oberhollenzer.
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77       Copyright © 2019 David Oberhollenzer et al License GPLv3+: GNU GPL ver‐
78       sion 3 or later <https://gnu.org/licenses/gpl.html>.
79       This is free software: you are free  to  change  and  redistribute  it.
80       There is NO WARRANTY, to the extent permitted by law.
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84sqfsdiff                          August 2019                      SQFSDIFF(1)
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