virsh:tldr:f7829

The command virsh save ${guest_id} ${filename} is used in the context of a virtualization platform called libvirt, which provides a management interface for virtualization technologies like KVM (Kernel-based Virtual Machine).

Here is a breakdown of the command:

• virsh is the command-line tool used to interact with the libvirt management interface.
• save is the subcommand within virsh used to save the state of a running virtual machine.
• ${guest_id} is a placeholder for the ID or name of the virtual machine (guest) that you want to save.
• ${filename} is a placeholder for the desired filename or path where the saved state will be stored.

By executing this command, the current state of the specified virtual machine is saved into a file, which can later be used to restore the machine to the same state. This can be useful, for example, when you want to pause or migrate a virtual machine temporarily while still retaining its current state for later use.