block device for bash Bash Conditional Expressions
if -b

---------- Forwarded message ---------
From: Liu Jaloo <>
Date: Sat, Nov 9, 2019 at 4:46 PM
Subject: how to create a block devie?
To: <>

i want to emulate a USB disk for install operation system, how to create a
block device using qemu-img to work with dd command.

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