ewfacquirestream(1)
NAME
ewfacquirestream --- acquires data in the EWF format from stdin
SYNOPSIS
ewfacquirestream [-A codepage] [-b number_of_sectors]
[-B number_of_bytes] [-c compression_values]
[-C case_number] [-d digest_type] [-D description]
[-e examiner_name] [-E evidence_number] [-f format]
[-l log_filename] [-m media_type] [-M media_flags]
[-N notes] [-o offset] [-p process_buffer_size]
[-P bytes_per_sector] [-S segment_file_size] [-t target]
[-2 secondary_target] [-hqsvVx]
DESCRIPTION
ewfacquirestream is a utility to acquire media data from stdin and store
it in EWF format (Expert Witness Format). ewfacquirestream acquires
media data in a format equivalent to EnCase and FTK imager, including
meta data. Under Linux, FreeBSD, NetBSD, OpenBSD, MacOS-X/Darwin
ewfacquirestream is part of the libewf package. libewf is a library to
access the Expert Witness Compression Format (EWF).
The options are as follows:
-A codepage
the codepage of header section, options: ascii (default),
windows-874, windows-932, windows-936, windows-949, windows-950,
windows-1250, windows-1251, windows-1252, windows-1253,
windows-1254, windows-1255, windows-1256, windows-1257 or
windows-1258
-b number_of_sectors
the number of sectors to read at once (per chunk), options: 16,
32, 64 (default), 128, 256, 512, 1024, 2048, 4096, 8192, 16384 or
32768
-B number_of_bytes
the number of bytes to acquire
-c compression_values
specify the compression values as: level or method:level
compression method options: deflate (default), bzip2 (bzip2 is
only supported by EWF2 formats) compression level options: none
(default), empty-block, fast or best
-C case_number
the case number (default is case_number)
-d digest_type
calculate additional digest (hash) types besides md5, options:
sha1, sha256
-D description
the description (default is description)
-e examiner_name
the examiner name (default is examiner_name)
-E evidence_number
the evidence number (default is evidence_number)
-f format
the EWF file format to write to, options: ftk, encase2, encase3,
encase4, encase5, encase6 (default), encase7, linen5, linen6,
linen7, ewfx. libewf does not support streamed writes for other
EWF formats.
-h shows this help
-l log_filename
logs acquiry errors and the digest (hash) to the log filename
-m media_type
the media type, options: fixed (default), removable, optical,
memory
-M media_flags
the media flags, options: logical, physical (default)
-N notes
the notes (default is notes)
-o offset
the offset to start to acquire (default is 0)
-p process_buffer_size
the process buffer size (default is the chunk size)
-P bytes_per_sector
the number of bytes per sector (default is 512)
-q quiet shows minimal status information
-s swap byte pairs of the media data (from AB to BA) (use this for
big to little endian conversion and vice versa)
-S segment_file_size
the segment file size in bytes (default is 1.4 GiB) (minimum is
1.0 MiB, maximum is 7.9 EiB for encase6 and encase7 format and
1.9 GiB for other formats)
-t target
the target file (without extension) to write to (default is
image)
-v verbose output to stderr
-V print version
-x use the chunk data instead of the buffered read and write
functions.
-2 secondary_target
the secondary target file (without extension) to write to
ewfacquirestream will read from stding until it encounters a read error.
On read error it will stop no error information is stored in the EWF
file(s).
Empty block compression detects blocks of sectors with entirely the same
byte data and compresses them using the default compression level.
ENVIRONMENT
None
FILES
None
EXAMPLES
# ewfacquirestream -C 1 -D Floppy -E 1.1 -e 'John D.' -N 'Just a floppy in my system' -m removable -M logical -t floppy </dev/fd0
ewfacquirestream 20120805
Using the following acquiry parameters:
Image path and filename: floppy.E01
Case number: 1
Description: Floppy
Evidence number: 1.1
Examiner name: John D.
Notes: Just a floppy in my system
Media type: removable
Volume type: logical
EWF file format: EnCase 5
Compression method: deflate
Compression level: none
Acquiry start offet: 0
Number of bytes to acquire: 0 (until end of input)
Evidence segment file size: 1.4 GiB (1572864000 bytes)
Block size: 64 sectors
Error granularity: 64 sectors
Retries on read error: 2
Acquiry started at: Sun Aug 5 11:32:41 2012
This could take a while.
Status: acquired 1.4 MiB (1474560 bytes)
in 1 second(s) with 1 MiB/s (1474560 bytes/second).
Acquiry completed at: Sun Aug 5 11:32:42 2012
Written: 1.4 MiB (1474560 bytes) in 1 second(s) with 1 MiB/s (1474560 bytes/second).
MD5 hash calculated over data: ae1ce8f5ac079d3ee93f97fe3792bda3
DIAGNOSTICS
Errors, verbose and debug output are printed to stderr when verbose
output -v is enabled. Verbose and debug output are only printed when
enabled at compilation.
BUGS
Please report bugs of any kind to <[email protected]> or on the
project website: http://code.google.com/p/libewf/
AUTHOR
These man pages were written by Joachim Metz.
COPYRIGHT
Copyright 2006-2014, Joachim Metz <[email protected]>.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.
SEE ALSO
ewfacquire(1), ewfexport(1), ewfinfo(1), ewfmount(1), ewfrecover(1),
ewfverify(1)
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