I found password set or network settings set, are not possible inside vm guests (qemu) with proxmox and OS user should do it manually, Also i found Kon Boot tool which can boot up a PC from a iso image and change windows kernel to boot up without password in only one next boot up, and then user should set a new password manually. The most beautiful part of Kon Boot is boot up and do jobs without any question and reset the machine after jobs done. It's too useful, and the worse part of it, is the commercial license 
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So, The question is, how i can Inject my commands or scripts from out to, inside of a kvm guest?!
))So, The question is, how i can Inject my commands or scripts from out to, inside of a kvm guest?!