ewfacquirestream

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] [-j jobs] [-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) 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, encase7-v2, linen5, linen6, linen7, ewfx.

-h  shows this help

-j jobs
    the number of concurrent processing jobs (threads), where a number of 0 represents single-threaded mode (default is 4 if multi-threaded mode is supported). libewf does not support streamed writes for other EWF formats.

-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 later formats 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 data chunk functions 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 offset:			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 <joachim.metz@gmail.com> or on the project website: https://github.com/libyal/libewf/

AUTHOR
These man pages were written by Joachim Metz.

COPYRIGHT

Copyright (C) 2006-2023, Joachim Metz <joachim.metz@gmail.com>.

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)