Fwd: how to create a block devie?

[Liu Jaloo]

block device for bash Bash Conditional Expressions

if -b

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

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.