how to start Ubuntu w/o GUI interface
We can edit the GRUB config to start the Ubuntu from text interface, by doing this the performance should be better.1 grant write permission to grub.cfg file
sudo chmod +w /boot/grub/grub.cfg
2 edit the cnfg file and add the text login
sudo vi grub.cfg
Add "text" at the end of this line:
linux /boot/vmlinuz-2.6.35-22-generic root=UUID=60944139-5f5d-4aa4-a0da-acc77766e0c6 ro quiet splash
3 remove the write permission for grub.cfg
sudo chmod -w /boot/grub/grub.cfg
4 reboot then we can login from the text interface
P.S.使用文本登陆的目的是为了节省系统资源，尤其是需要在虚拟机（vmware）里做测试的时候。今天换了文本登陆之后，vmware占用的内存才50M左右，远远小于图形界面的200-300M，基本上可以将vmware设成开机启动了。
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