virt-install:tldr:aeb8e

This command is used to create and install a virtual machine using the "virt-install" command-line tool. Let's break down the command and explain each part:

1. virt-install: This is the command-line tool used to create and install virtual machines.

2. --name ${vm_name}: This specifies the name of the virtual machine. The ${vm_name} is a placeholder that should be replaced with the desired name of the virtual machine.

3. --memory ${1024}: This sets the amount of memory (RAM) allocated to the virtual machine. The ${1024} is a placeholder that should be replaced with the desired amount of memory in megabytes.

4. --disk path=${path-to-image-qcow2},size=${12}: This defines the virtual machine's disk configuration. The path= specifies the path to the qcow2 image file, which serves as the virtual machine's disk. The ${path-to-image-qcow2} is a placeholder that should be replaced with the actual path to the desired qcow2 image file. The size= parameter specifies the size of the disk in gigabytes and ${12} is a placeholder that should be replaced with the desired size.

5. --cdrom ${path-to-debian-iso}: This indicates that the virtual machine should boot from a CD/DVD-ROM image. The ${path-to-debian-iso} is a placeholder that should be replaced with the actual path to the Debian ISO file.

By running this command with proper values filled in for the placeholders, a virtual machine will be created with the specified name, memory, disk configuration, and boot from the specified ISO file.