[Solved] How can I get the ‘ls’ output to a variable in grub2?

Ricardo Asks: How can I get the ‘ls’ output to a variable in grub2?
I install Ubuntu into a SSD drive and when I insert the SSD into different computer I have to change manually the disk number. I would like to get the home directory of all the disks until I found the one in the SSD.

In order to do that I need to know how to save the output of commands into variables (specially ‘ls’) Is that even possible?

Thanks.

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