To delete a container with the lxc command on a Linux system, you can use the lxc delete command followed by the name of the container you want to delete. The lxc delete command removes the container from the system, including all of its files and data.
For example, to delete a container named "container1", you can use the following command:
$ lxc delete container1
By default, the lxc delete command will prompt you for confirmation before deleting the container. You can use the -f flag to force the deletion without prompting for confirmation.
$ lxc delete -f container1
Note that this will permanently delete the container and all of its data, and there is no way to recover it. Use caution when using the lxc delete command.
For more information on the lxc command and other options for managing containers with LXD, you can refer to the lxc man page by running man lxc on the command line.