KVM/libguestfs-tools/virt-customize

virt-customize command available since 2014^[1] included in libguestfs-tools which allows to customize virtual machines.

• Edit grup Kernel command line ^[2]

virt-customize -a rhel7.img \
    --edit '/etc/default/grub:
      s/^GRUB_CMDLINE_LINUX="/GRUB_CMDLINE_LINUX="nosmt /' \
    --run-command 'grub2-mkconfig -o /boot/grub2/grub.cfg'

virt-customize -a guest1.img \
    --hostname guest1 --timezone Europe/London \
    --install gcc

• virt-install
• virt-clone
• virt-builder
• virt-customize

1. ↑ https://rwmj.wordpress.com/2014/03/25/new-tool-virt-customize/
2. ↑ https://rwmj.wordpress.com/2019/04/09/tip-edit-grub-kernel-command-line-in-rhel-7-or-centos-7/