How to start stop or restart an LXC container?

You should have “lxc” command line utility installed and setup on your system. It allows you to perform various operations on LXC containers. Here are the commands to start, stop and restart an LXC container:

Start a Container:
```
lxc-start -n container-name
```

Stop a Container:
```
lxc-stop -n container-name
```

Restart a Container:
There is no direct command to restart the container in one line, but you can accomplish it by running two commands consecutively which are stop and start:
```
lxc-stop -n container-name && lxc-start -n container-name
```

you can use `lxc-shutdown` and then start it:
```
lxc-shutdown -n container-name && lxc-start -n container-name
```

Remember to replace “container-name” with the actual name of your container.

Running these commands would likely require root privileges, so you may need to use “sudo” on Ubuntu or Debian based systems.

If LXC commands are not working, you may need to install LXC Utilities using `sudo apt install lxc-utils` on Ubuntu or Debian based system.