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#