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