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-.TH SQFSDIFF "1" "August 2019" "sqfsdiff" "User Commands"
-.SH NAME
-sqfsdiff \- compare two squashfs images by contents and metadata
-.SH SYNOPSIS
-.B sqfsdiff
-[\fI\,OPTIONS\/\fR...] \-\-old \fI\,<first>\fR \-\-new \fI\,<second>\/\fR
-.SH 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.
-.PP
-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.
-.PP
-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.
-.PP
-Possible options:
-.TP
-\fB\-\-old\fR, \fB\-a\fR <first>
-Specify the first filesystem image or source directory, relativ to which the
-changes are evaluated.
-.TP
-\fB\-\-new\fR, \fB\-b\fR <second>
-Specify the second filesystem image to source directory to compare to the
-first one.
-.TP
-\fB\-\-no\-contents\fR, \fB\-C\fR
-Do not compare file contents.
-.TP
-\fB\-\-no\-owner\fR, \fB\-O\fR
-Do not compare file owners.
-.TP
-\fB\-\-no\-permissions\fR, \fB\-P\fR
-Do not compare permission bits.
-.TP
-\fB\-\-timestamps\fR, \fB\-T\fR
-Compare file timestamps.
-.TP
-\fB\-\-inode\-num\fR, \fB\-I\fR
-Compare inode numbers of all files.
-.TP
-\fB\-\-super\fR, \fB\-S\fR
-Also compare meta data in super blocks.
-.TP
-\fB\-\-extract\fR, \fB\-e\fR <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 \fBold\fR and the contents of the second image in a sub directory
-named \fBnew\fR.
-.TP
-\fB\-\-help\fR, \fB\-h\fR
-Print help text and exit.
-.TP
-\fB\-\-version\fR, \fB\-V\fR
-Print version information and exit.
-.SH EXIT STATUS
-The exit status is similar that of diff(1): 0 means equal, 1 means different,
-2 means problem.
-.SH SEE ALSO
-rdsquashfs(1), sqfs2tar(1)
-.SH AUTHOR
-Written by David Oberhollenzer.
-.SH COPYRIGHT
-Copyright \(co 2019 David Oberhollenzer et al
-License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
-.br
-This is free software: you are free to change and redistribute it.
-There is NO WARRANTY, to the extent permitted by law.