Get the /dev/disk/by-id fragment for a physical drive

ls -l /dev/disk/by-id | egrep ata-.*`hdparm -i /dev/sda | grep SerialNo | sed 's/.*SerialNo=//' | tr -d "\n"`.*sda$ | sed -e 's/.*ata-/ata-/' -e 's|[ ].*||' | tr -d "\n"
This was tested on Ubuntu 12.04 (Precise) LTS Server. It returns the name of the symlink within /dev/disk/by-id for the physical drive you specify. Change /dev/sda to the one you want, and replace ata- with scsi- or the appropriate type for your drive. I used this to pre-configure grub-pc during a non-interactive install because I had to tell it which disk to install grub on, and physical disks don't have a UUID such as that blkid provides.

-2
2013-01-07 10:20:25

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What Others Think

What the f***? ls -go /dev/disk/by-id/ | grep '/sda$' | grep -o 'ata[^ ]*' No need for hdparm, root rights and those monstrous things.
michelsberg · 339 weeks and 3 days ago
Yeah that is way more complicated than it needs to be.
DaveQB · 339 weeks and 3 days ago

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Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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