blkcat man page

blkcat — Display the contents of file system data unit in a disk image.

Synopsis

blkcat [-ahswvV] [-f fstype] [-u unit_size] [-i imgtype] [-o imgoffset] [-b dev_sector_size] image [images] unit_addr [num]

Description

blkcat displays num data units (default is one) starting at the unit address unit_addr from image to stdout in different formats (default is raw). blkcat was called dcat in TSK versions prior to 3.0.0.

Arguments

-a
Display the contents in ASCII
-f fstype
Specify image as a specific file type. If 'swap' is given here, the image will be displayed in pages of size 4096 bytes. If 'raw' is given, then 512-bytes is used as the default size. The '-u' flag can change the default size. Use '-f list' to list the supported file system types. If not given, autodetection methods are used.
-h
Display the contents in hexdump
-s
Display statistics on the image (unit size, file block size, and number of fragments).
-u unit_size
Specify the size of the default data unit for raw, blkls, and swap images.
-i imgtype
Identify the type of image file, such as raw. Use '-i list' to list the supported types. If not given, autodetection methods are used.
-o imgoffset
The sector offset where the file system starts in the image.
-b dev_sector_size
The size, in bytes, of the underlying device sectors. If not given, the value in the image format is used (if it exists) or 512-bytes is assumed.
-v
Verbose output to stderr.
-V
Display version.
-w
Display the contents in an HTML table format.
image [images]
The disk or partition image to read, whose format is given with '-i'. Multiple image file names can be given if the image is split into multiple segments. If only one image file is given, and its name is the first in a sequence (e.g., as indicated by ending in '.001'), subsequent image segments will be included automatically.
unit_addr
Address of the disk unit to display. The size of a unit on this file system can be determined using the -s option.
num
Number of data units to display.

The basic functionality of blkcat can also be achieved using dd. To determine which inode has allocated a given unit, the ifind(1) command can be used.

Examples

# blkcat -hw image 264 4

or

# blkcat -hw image 264

See Also

ifind(1)

Author

Brian Carrier <carrier at sleuthkit dot org>

Send documentation updates to <doc-updates at sleuthkit dot org>

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