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dk-blks

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dk-blks — Generate data stream with fixed buffer sizes

Description

The program reads a data stream from standard input and writes it to standard output using a specified block size.

It is inteded to prepare a data stream for the dd program, source data may come i.e. from network transmission (i.e. using netcat or dk-send/dk-recv) or a decryption or decompression program.

Example

... | dk-blks -b 1M | dd of=/dev/sda1 bs=1M

Program	Option	Purpose
…		Any command sequence resulting in a data stream of a disk partition image, may be netcat or dk-recv optionally combined with decryption and decompression commands.
dk-blks		Collect data and issue sequence of fixed size blocks.
	-b 1M	Block size is 1 Mibibyte (1048576 bytes).
dd		Apply data stream to disk or partition.
	of=/dev/sda1	Partition to write is /dev/sda1.
	bs=1M	Block size is 1 Mibibyte (must match the blocksize used for dk-blks).

Note: You must use upper case characters in the bs= option of the dd command!
Lower case characters would result in 1000 Bytes, 1000000 bytes… and thus in a block size mismatch.

Manual

See the [dk-blks manual] for the full documentation of the program.