[vc_row][vc_column][vc_column_text]It is frequently for us to update or install new software when using the Ubuntu ,sometimes it is very slow to download and very easy to install wrongly caused the failure of installation.There may be of the problem of the source of the soft-system under the condition of our own network speed are OK,So we can find the root of the problem and tell the system.
Following I will tell you how to add software source.[/vc_column_text][vc_tour][vc_tab title=”Open the source” tab_id=”1393381561-1-30″][vc_column_text]Use the editor to open the source file,I use the gedit,you can use other editor if you like.
sudo gedit /etc/apt/sources.list[/vc_column_text][/vc_tab][vc_tab title=”Add the source” tab_id=”1393381561-2-76″][vc_column_text]Add the source ,Copy and paste the following URL to the file(you can also find more source and put into the file)
## sohu
deb http://mirrors.sohu.com/ubuntu/ quantal main restricted universe
multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-security main restricted universe
multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-updates main restricted universe
multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-proposed main restricted universe
multiverse
deb http://mirrors.sohu.com/ubuntu/ quantal-backports main restricted
universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal main restricted universe
multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-securit y main restricted
universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-updates main restricted
universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-proposed main restricted
universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ quantal-backport s main restricted
universe multiverse[/vc_column_text][/vc_tab][vc_tab title=”Update the source ” tab_id=”1393439618177-2-4″][vc_column_text]Run the sudo apt-get update,after that , try to install a software[/vc_column_text][/vc_tab][/vc_tour][/vc_column][/vc_row]
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