Install KVM, QEMU And Virt-Manager On Arch/Arch Linux based distros -

sudo pacman -S qemu virt-manager libvirt virt-viewer dnsmasq vde2 bridge-utils openbsd-netcat ebtables libguestfs

Enable libvirtd service

sudo systemctl enable --now libvirtd

Allow non-root user to manage virtual machines

sudo nano /etc/libvirt/libvirtd.conf

Uncomment the option “unix_sock_group” and enter the group name as “libvirt”.

After that, uncomment the option “unix_sock_rw_perms” and leave the permission as default “0770”.

Save configuration and exit

Add user to libvirt:-

sudo usermod -a -G libvirt $(whoami)

sudo systemctl restart libvirtd

Install KVM, QEMU And Virt-Manager On Ubuntu/Debian or based distros

Run this to install-

sudo apt install -y qemu qemu-kvm libvirt-daemon libvirt-clients bridge-utils virt-manager

Enable libvirtd service

sudo systemctl enable --now libvirtd

Install KVM, QEMU and Virt-manager On Fedora/Redhat or based distros

Run this to install-

sudo dnf install @virtualization

Enable libvirtd service

sudo systemctl start libvirtd
sudo systemctl enable libvirtd