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dd

This is a Linux and Unix command used to copy specified files or an entire directory to another directory.

Examples

Write an ISO image file named input.iso to the device /dev/sdb:
```
dd if=input.iso of=/dev/sdb
```
Write the first 10 sectors of the device /dev/sda to the file mbr.bin:
```
dd if=/dev/sda of=mbr.bin bs=512 count=10
```
Write the second partition of a disk image file named disk.img to the first sector of the device /dev/sdc3:
```
dd if=disk.img of=/dev/sdc3 bs=512 skip=2048 seek=1 count=2048
```