virt-manager:tldr:655ec

The command "virt-manager" refers to the Virtual Machine Manager, a graphical user interface (GUI) tool used for managing and creating virtual machines (VMs) on the Linux operating system.

When you run the "virt-manager" command, it launches the Virtual Machine Manager application, which provides a user-friendly interface to manage various hypervisors, such as KVM (Kernel-based Virtual Machine) and QEMU (Quick EMUlator). It allows you to create, configure, start, stop, and monitor virtual machines on your Linux system.

Key features provided by virt-manager include:

1. Creating virtual machines: You can create new VMs by specifying parameters such as disk size, memory, operating system, and network configurations.

2. Virtual machine customization: You can modify and configure various aspects of virtual machines, including hardware resources like CPU, memory, storage, and network interfaces.

3. VM management: Virt-manager allows you to start, stop, pause, and resume virtual machines. You can also view their resource usage and monitor performance.

4. Managing virtual networks: It provides tools to manage and configure networks used by VMs, such as creating virtual bridges, adding network interfaces, and setting up NAT (Network Address Translation).

5. Live migration: Virt-manager supports live migration, allowing you to move virtual machines between physical hosts without any downtime.

Overall, using the "virt-manager" command simplifies the process of creating, managing, and monitoring virtual machines through a user-friendly GUI, enhancing the virtualization experience for Linux users.