| 1 | .TH DD 1
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| 2 | .SH NAME
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| 3 | dd \- convert and copy a file
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| 4 | .SH SYNOPSIS
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| 5 | \fBdd\fR [\fIoption = value\fR] ...\fR
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| 6 | .br
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| 7 | .de FL
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| 8 | .TP
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| 9 | \\fB\\$1\\fR
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| 10 | \\$2
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| 11 | ..
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| 12 | .de EX
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| 13 | .TP 20
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| 14 | \\fB\\$1\\fR
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| 15 | # \\$2
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| 16 | ..
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| 17 | .SH EXAMPLES
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| 18 | .EX "dd if=/dev/fd0 of=/dev/fd1" "Copy disk 0 to disk 1"
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| 19 | .EX "dd if=x of=y bs=1w skip=4" "Copy \fIx\fP to \fIy\fP, skipping 4 words"
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| 20 | .EX "dd if=x of=y count=3" "Copy three 512\-byte blocks"
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| 21 | .SH DESCRIPTION
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| 22 | .PP
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| 23 | This command is intended for copying partial files.
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| 24 | The block size, skip count, and number of blocks to copy can be specified.
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| 25 | The options are:
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| 26 | .PP
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| 27 | .ta 0.25i 1.5i
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| 28 | \fBif\fR = file \- Input file (default is \fIstdin\fR)
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| 29 | .br
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| 30 | \fBof\fR = file \- Output file (default is standard output)
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| 31 | .br
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| 32 | \fBibs\fR = n \- Input block size (default 512 bytes)
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| 33 | .br
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| 34 | \fBobs\fR = n \- Output block size (default is 512 bytes)
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| 35 | .br
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| 36 | \fBbs\fR = n \- Block size; sets \fIibs\fP and \fIobs\fP (default is 512 bytes)
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| 37 | .br
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| 38 | \fBskip\fR = n \- Skip \fIn\fP input blocks before reading
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| 39 | .br
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| 40 | \fBseek\fR = n \- Skip \fIn\fP output blocks before writing
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| 41 | .br
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| 42 | \fBcount\fR = n \- Copy only \fIn\fP input blocks
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| 43 | .br
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| 44 | \fBconv = lcase\fR \- Convert upper case letters to lower case
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| 45 | .br
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| 46 | \fBconv = ucase\fR \- Convert lower case letters to upper case
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| 47 | .br
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| 48 | \fBconv = swab\fR \- Swap every pair of bytes
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| 49 | .br
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| 50 | \fBconv = noerror\fR \- Ignore errors and just keep going
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| 51 | .br
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| 52 | \fBconv = silent\fR \- Suppress statistics (MINIX 3 specific flag)
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| 53 | .PP
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| 54 | Where sizes are expected, they are in bytes.
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| 55 | However, the letters \fBw\fR, \fBb\fR, or \fBk\fR may be appended to the
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| 56 | number to indicate words (2 bytes), blocks (512 bytes), or K
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| 57 | (1024 bytes), respectively.
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| 58 | When
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| 59 | .I dd
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| 60 | is finished, it reports the number of full and partial blocks read and written.
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| 61 | .SH "SEE ALSO"
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| 62 | .BR vol (1).
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