dd.1 - ubase - suckless linux base utils | |
git clone git://git.suckless.org/ubase | |
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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 |