snippetbashTip
dd — Convert and copy a file. More information: <https://manned.org/dd.1p>.
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Problem
How to use the
dd command: Convert and copy a file. More information: <https://manned.org/dd.1p>.Solution
dd — Convert and copy a file. More information: <https://manned.org/dd.1p>.Make a bootable USB drive from an isohybrid file (such as
archlinux-xxx.iso) and show the progress:dd if={{path/to/file.iso}} of={{/dev/usb_drive}} status=progressClone a drive to another drive with 4 MiB block size and flush writes before the command terminates:
dd bs=4194304 conv=fsync if={{/dev/source_drive}} of={{/dev/dest_drive}}Generate a file with a specific number of random bytes by using kernel random driver:
dd bs={{100}} count={{1}} if=/dev/urandom of={{path/to/random_file}}Benchmark the sequential write performance of a disk:
dd bs={{1024}} count={{1000000}} if=/dev/zero of={{path/to/file_1GB}}Create a system backup, save it into an IMG file (can be restored later by swapping
if and of), and show the progress:dd if={{/dev/drive_device}} of={{path/to/file.img}} status=progressCode Snippets
Make a bootable USB drive from an isohybrid file (such as `archlinux-xxx.iso`) and show the progress
dd if={{path/to/file.iso}} of={{/dev/usb_drive}} status=progressClone a drive to another drive with 4 MiB block size and flush writes before the command terminates
dd bs=4194304 conv=fsync if={{/dev/source_drive}} of={{/dev/dest_drive}}Generate a file with a specific number of random bytes by using kernel random driver
dd bs={{100}} count={{1}} if=/dev/urandom of={{path/to/random_file}}Benchmark the sequential write performance of a disk
dd bs={{1024}} count={{1000000}} if=/dev/zero of={{path/to/file_1GB}}Create a system backup, save it into an IMG file (can be restored later by swapping `if` and `of`), and show the progress
dd if={{/dev/drive_device}} of={{path/to/file.img}} status=progressContext
tldr-pages: common/dd
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