Set the update source for Linux

From riusksks blog

I installed Ubuntu in my notebook before, and the installation speed was very fast, but there was a shortage of resources. I didn't need GCC, GCC, rpm, or rpm, and there were other tools, then we use apt-get to download and install the tool, but it does not have any tools in the update source set by default, and it is still abroad, which is slow, therefore, the following update sources are found on the Internet:

Deb http://mirrors.163.com/ubuntu/ karmic main restricted universe multiverse
Deb http://mirrors.163.com/ubuntu/ karmic-security main restricted universe multiverse
Deb http://mirrors.163.com/ubuntu/ karmic-updates main restricted universe multiverse
Deb http://mirrors.163.com/ubuntu/ karmic-proposed main restricted universe multiverse
Deb http://mirrors.163.com/ubuntu/ karmic-backports main restricted universe multiverse
Deb-src http://mirrors.163.com/ubuntu/ karmic main restricted universe multiverse
The deb-src http://mirrors.163.com/ubuntu/ karmic-security main restricted universe multiverse
Deb-src http://mirrors.163.com/ubuntu/ karmic-updates main restricted universe multiverse
Deb-src http://mirrors.163.com/ubuntu/ karmic-proposed main restricted universe multiverse
Deb-src Co., http://mirrors.163.com/ubuntu/. karmic-backports main restricted universe multiverse

Netease will certainly be much faster than the previous sources ......

The procedure is as follows:

Riusksk @ ubuntu :~ $ Sudo gedit/etc/apt/sources. list

Add the above update source, and save and exit. Use these sources to update the system and enter the following command:

Riusksk @ ubuntu :~ $ Sudo apt-get update & sudo apt-get upgrade