mirror of https://github.com/CrimsonTome/tldr.git
add dd.md for osx and linux
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# dd
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> convert and copy a file
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- Make a bootable usb drive from an isohybrid file (such like archlinux-xxx.iso)
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`dd if={{file.iso}} of=/dev/{{usb_drive}}`
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- Clone a drive to another drive with 4MB block and ignore error
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`dd if=/dev/{{source_drive}} of=/dev/{{dest_drive}} bs=4M conv=noerror`
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- Generating a file of 100 random bytes by using kernel random driver
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`dd if=/dev/urandom of={{random_file}} bs=100 count=1`
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- Benchmark the write performance of a disk
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`dd if=/dev/zero of={{file_1GB}} bs=1024 count=1000000`
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# dd
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> convert and copy a file
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- Make a bootable usb drive from an isohybrid file (such like archlinux-xxx.iso)
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`dd if={{file.iso}} of=/dev/{{usb_drive}}`
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- Clone a drive to another drive with 4MB block and ignore error
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`dd if=/dev/{{source_drive}} of=/dev/{{dest_drive}} bs=4m conv=noerror`
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- Generating a file of 100 random bytes by using kernel random driver
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`dd if=/dev/urandom of={{random_file}} bs=100 count=1`
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- Benchmark the write performance of a disk
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`dd if=/dev/zero of={{file_1GB}} bs=1024 count=1000000`
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