# dd

> convert and copy a file

- Make a bootable usb drive from an isohybrid file (such like archlinux-xxx.iso)

`dd if={{file.iso}} of=/dev/{{usb_drive}}`

- Clone a drive to another drive with 4MB block and ignore error

`dd if=/dev/{{source_drive}} of=/dev/{{dest_drive}} bs=4M conv=noerror`

- Generating a file of 100 random bytes by using kernel random driver

`dd if=/dev/urandom of={{random_file}} bs=100 count=1`

- Benchmark the write performance of a disk

`dd if=/dev/zero of={{file_1GB}} bs=1024 count=1000000`