dd is a common Unix program whose primary purpose is the low-level copying and conversion of raw data. dd is an application that will “convert and copy a file”according to the referenced manual page for Version 7 Unix and is most likely inspired from DD found in IBM JCL, and the command’s syntax is meant to be reminiscent of this.
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1) DUPLICATE SEVERAL DRIVES CONCURRENTLY
dd if=/dev/sda | tee >(dd of=/dev/sdb) | dd of=/dev/sdcIf you have some drive imaging to do, you can boot into any liveCD and use a commodity machine. The drives will be written in parallel.
To improve efficiency, specify a larger block size in dd:
dd if=/dev/sda bs=64k | tee >(dd of=/dev/sdb bs=64k) | dd of=/dev/sdc bs=64kTo image more drives , insert them as additional arguments to tee:
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