关闭firecracker

root@ubuntu:~/rootfs/my# curl --unix-socket /tmp/firecracker.socket -i 
> >     -X PUT "http://localhost/actions" 
> >     -H  "accept: application/json" 
> >     -H  "Content-Type: application/json" 
> >     -d "{
> >              "action_type": "SendCtrlAltDel"
> >     }"
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100    90  100    90    0     0  90000      0 --:--:-- --:--:-- --:--:-- 90000
100    68  100    68    0     0  68000      0 --:--:-- --:--:-- --:--:-- 68000
curl: (3) Port number ended with ' '
curl: (3) Port number ended with ' '
curl: (3) Illegal characters found in URL
root@ubuntu:~/rootfs/my#