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dd.1 - ubase - suckless linux base utils
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dd.1 (1516B)
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1 .Dd February 2, 2015
2 .Dt DD 1
3 .Os ubase
4 .Sh NAME
5 .Nm dd
6 .Nd convert and copy a file
7 .Sh SYNOPSIS
8 .Nm
9 .Op Ar operand...
10 .Sh DESCRIPTION
11 .Nm
12 copies the standard input to the standard output. By default input data …
13 read and written in 64kB blocks. When finished,
14 .Nm
15 displays the number of records read and written as well as the total num…
16 of bytes copied.
17 .Nm
18 syncs the filesystem once it is done copying. If you want to disable tha…
19 the
20 .Ar nosync
21 option.
22 .Sh OPTIONS
23 .Bl -tag -width Ds
24 .It Ar bs Ns Op Ar =N
25 If
26 .Ar bs
27 is not specified, the default blocksize is 64kB. If
28 .Ar bs
29 is specified
30 without setting it to a specific value then an optimal value between the
31 source and target filesystem will be selected. If this process fails it …
32 fallback to the system's pagesize. Adjust
33 .Ar N
34 to set the block size of the transfers in bytes.
35 .It Ar count=N
36 Copy only
37 .Ar N
38 input blocks.
39 .It Ar direct
40 Use direct I/O for data.
41 .It Ar if=file
42 Read input from
43 .Ar file
44 instead of the standard input.
45 .It Ar nosync
46 Do not sync the filesystem once we are done copying.
47 .It Ar quiet
48 Enable quiet output.
49 .It Ar of=file
50 Write output to
51 .Ar file
52 instead of the standard output. If an initial portion of the output
53 .Ar file
54 is skipped using the seek operand, the output file is truncated at that
55 point.
56 .It Ar seek=N
57 Seek
58 .Ar N
59 blocks from the beginning of the output before copying.
60 .It Ar skip=N
61 Skip
62 .Ar N
63 blocks from the beginning of the input before copying.
64 .It Ar conv=notrunc
65 Do not truncate the output file.
66 .El
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