Co robi DD użycie. Konsola output file (or standard output if of is not specified). Any number of.

Czy przydatne?

Polecenie dd

Wykonanie, użycie: Make a copy of an input file (if) using the specified conditions, and send the results to the output file (or standard output if of is not specified). Any number of options can be supplied, although if and of are the most common and are usually specified first. Because dd can handle arbitrary block sizes, it is useful when converting between raw physical devices

Opcje wykonania dd w konsoli

bs=n

Set input and output block size to n bytes; this option overrides ibs and obs.

 cbs=n

Set the size of the conversion buffer (logical record length) to n bytes. Use only if the conversion flag is ascii, ebcdic, ibm, block, or unblock.

 conv=flags

Convert the input according to one or more (comma-separated) flags listed next. The first five flags are mutually exclusive.

ascii

EBCDIC to ASCII.

 ebcdic

ASCII to EBCDIC.

 ibm

ASCII to EBCDIC with IBM conventions.

 block

Variable-length records (i.e., those terminated by a newline) to fixed-length records.

 unblock

Fixed-length records to variable-length records.

 lcase

Uppercase to lowercase.

 ucase

Lowercase to uppercase.

 noerror

Continue processing after read errors.

 notrunc

Don't truncate output file.

 swab

Swap each pair of input bytes.

 sync

Pad input blocks to ibs with trailing zeros.
count=n

Copy only n input blocks.

 ibs=n

Set input block size to n bytes (default is 512).

 if=file

Read input from file (default is standard input).

 obs=n

Set output block size to n bytes (default is 512).

 of=file

Write output to file (default is standard output).

 seek=n

Skip n output-sized blocks from start of output file.

 skip=n

Skip n input-sized blocks from start of input file.

 --help

Print help message and then exit.

 --version

Print the version number and then exit.

You can multiply size values (n) by a factor of 1024, 512, or 2 by appending the letter k, b, or w, respectively. You can use the letter x as a multiplication operator between two numbers.

Przykłady dd działanie w Słownik polecenie D

Przykład DD użycie :
Jak użyć and report the differences. No more than one of the files may be given as - (indicating that it is to be read from standard input). The output is displayed with the following codes: = = = = All co znaczy.
Przykład DD użycie :
Jak użyć excluding the last level. Useful for stripping the actual filename from a pathname. If there are no slashes (no directory levels) in pathname , dirname prints . to indicate the current directory. See krzyżówka.
Przykład DD użycie :
Jak użyć administration command. Sign a secure DNS keyset with the key signatures specified in the list of key-identifiers . A zone administrator would use this command to sign a child zone's keyset with co to jest.
Przykład DD użycie :
Jak użyć Disables access to a printer. Equivalent to reject słownik.
Przykład DD użycie :
Jak użyć administration command. Display the system control messages from the kernel ring buffer. This buffer stores all messages since the last system boot, or the most recent ones if the buffer has been czym jest.