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add dd.md for osx and linux

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William
2015-12-27 17:58:53 +08:00
parent 666b0841f9
commit 9b421535dd
2 changed files with 38 additions and 0 deletions
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# 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`

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pages/osx/dd.md Normal file
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# 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`