How can run a instruction automaticly when Ubuntu12.04 starting up??

[levinie001]

I want to run "sudo ifconfig eth0 192.168.64.3" automaticly when my VM starting up.

[ajgreeny]

I want to run "sudo ifconfig eth0 192.168.64.3" automaticly when my VM starting up.

Add that command without the sudo prefix to your /etc/rc.local file, just above the "exit 0" line.

[rubylaser]

If you are just trying to set a static ip on eth0, why don't you just make an entry in /etc/network/interfaces for the interface?

[xdracco]

Add ethernet configuration to /etc/network/interfaces as mentioned above then restart networking.