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.TH RDSQUASHFS "1" "May 2019" "inspect SquashFS filesystems" "User Commands"
.SH NAME
rdsquashfs \- tool to examine or uncompress SquashFS filesystems
.SH SYNOPSIS
.B rdsquashfs
[\fI\,OPTIONS\/\fR] \fI\,<squashfs-file>\/\fR
.SH DESCRIPTION
View or extract the contents of a squashfs image.
.PP
The following options can be used to specify what operation to perform. One
of those has to be present:
.TP
\fB\-\-list\fR, \fB\-l\fR <path>
Produce a directory listing similar to \fBls \-l\fR for a given path in
the SquashFS image.
.TP
\fB\-\-cat\fR, \fB\-c\fR <path>
If the specified path is a regular file in the image, extract it and dump
its contents to stdout.
.TP
\fB\-\-xattr\fR, \fB\-x\fR <path>
If the inode that the specified path resolves to has extended attributes, dump
them as key value pairs to stdout.
.TP
\fB\-\-unpack\-path\fR, \fB\-u\fR <path>
Unpack the specified sub directory from the image. To unpack everything,
simply specify /.
.TP
\fB\-\-describe\fR, \fB\-d\fR
Produce a file listing from the image.
.PP
The following options can be used to control the behaviour of the specified
operation:
.TP
\fB\-\-unpack\-root\fR, \fB\-p\fR <path>
If used with \fB\-\-unpack\-path\fR, this is where the
data is unpacked to. If used with \fB\-\-describe\fR, this
is used as a prefix for the input path of
regular files.
.TP
\fB\-\-jobs\fR, \fB\-j\fR <count>
Specify a number of parallel jobs to spawn for unpacking file data.
The file hierarchy is created sequentially but the data unpacking is
distributed over the given number of jobs so that each job has to unpack
roughly the same amount of data. This can be used to speed up unpacking
of large SquashFS archives.
.TP
\fB\-\-no\-dev\fR, \fB\-D\fR
Do not unpack device special files.
.TP
\fB\-\-no\-sock\fR, \fB\-S\fR
Do not unpack socket files.
.TP
\fB\-\-no\-fifo\fR, \fB\-F\fR
Do not unpack named pipes.
.TP
\fB\-\-no\-slink\fR, \fB\-L\fR
Do not unpack symbolic links.
.TP
\fB\-\-no\-empty\-dir\fR, \fB\-E\fR
Do not unpack directories that would end up
empty after applying the above rules.
.TP
\fB\-\-no\-sparse\fR, \fB\-Z\fR
Do not create sparse files. Always unpack sparse files by
writing blocks of zeros to disk.
.TP
\fB\-\-chmod\fR, \fB\-C\fR
Change permission flags of unpacked files to
those store in the SquashFS image.
.TP
\fB\-\-chown\fR, \fB\-O\fR
Change ownership of unpacked files to the
UID/GID set in the SquashFS image.
.TP
\fB\-\-quiet\fR, \fB\-q\fR
Do not print out progress while unpacking.
.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 AUTHOR
Written by David Oberhollenzer.
.SH COPYRIGHT
Copyright \(co 2019 David Oberhollenzer
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.
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