blkcalc(1) [debian man page]
BLKCALC(1) General Commands Manual BLKCALC(1) NAME
blkcalc - Converts between unallocated disk unit numbers and regular disk unit numbers. SYNOPSIS
blkcalc [-dsu unit_addr] [-vV] [-i imgtype] [-o imgoffset] [-b dev_sector_size] [-f fstype] image [images] DESCRIPTION
blkcalc creates a disk unit number mapping between two images, one normal and another that only contains the unallocated units of the first (the default behavior of the blkls(1) program). One of the -d, -s, or -u options must be given. If the -d option is given, then the unit_addr value is the disk unit address in the regular image (i.e. from dd ). If the unit is unallocated, its address in an unallocated image is given. If the -u option is given, then the unit_addr value is the disk unit address in the unallocated unit image (i.e. from blkls(1) ). Its disk unit address in the original image is determined. If the -s option is given, then the unit_addr value is the disk unit address in the slack image (i.e. from blkls -s). The image is the full, original image (i.e. from dd). blkcalc was called dcalc in TSK versions prior to 3.0.0. -f fstype Identify the File System type of the image. Use '-f list' to list the supported file system types. If not given, autodetection methods are used. -i imgtype Identify the type of image file, such as raw or split. 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. This is useful when keyword searching an image generated by blkls. This allows one to identify the original unit address and provides bet- ter documentation. EXAMPLE
# blkcalc -u 64 images/wd0e SEE ALSO
blkls(1), AUTHOR
Brian Carrier <carrier at sleuthkit dot org> Send documentation updates to <doc-updates at sleuthkit dot org> BLKCALC(1)
Check Out this Related Man Page
BLKCAT(1) General Commands Manual BLKCAT(1) NAME
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 sup- ported 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 or split. 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] One (or more if split) disk or partition images whose format is given with '-i'. 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> BLKCAT(1)