46 lines
1.4 KiB
Groff
46 lines
1.4 KiB
Groff
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.TH DD 1 ubase-VERSION
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.SH NAME
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\fBdd\fR - Copy a file
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.SH SYNOPSIS
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\fBdd\fR [\fIoperand...\fR]
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.SH DESCRIPTION
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\fBdd\fR copies the standard input to the standard output. By default input
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data is read and written in 64kB blocks. When finished, \fBdd\fR displays the
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number of records read and written as well as the total number of bytes copied.
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\fBdd\fR syncs the filesystem once it is done copying. If you want
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to disable that use the \fInosync\fR option.
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.SH OPERANDS
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.TP
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if=\fIfile\fR
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Read input from \fIfile\fR instead of the standard input.
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.TP
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of=\fIfile\fR
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Write output to \fIfile\fR instead of the standard output. If an initial
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portion of the output \fIfile\fR is skipped using the seek operand, the output
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file is truncated at that point.
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.TP
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bs[=\fIN\fR]
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If bs is not specified, the default blocksize is 64kB. If bs is specified
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without setting it to a specific value then an optimal value between the source
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and target filesystem will be selected. If this process fails it will fallback
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to the system's pagesize. Adjust \fIN\fR to set the block size of the transfers
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in bytes.
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.TP
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seek=\fIN\fR
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Seek \fIN\fR blocks from the beginning of the output before copying.
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.TP
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skip=\fIN\fR
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Skip \fIN\fR blocks from the beginning of the input before copying.
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.TP
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count=\fIN\fR
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Copy only \fIN\fR input blocks.
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.TP
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direct
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Use direct I/O for data.
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.TP
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quiet
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Enable quiet output.
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.TP
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nosync
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Do not sync the filesystem once we are done copying.
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