Useful extra repositories
{CODE(colors="bash", wrap="1", caption="Command on a console")}
graciaambelsahara@linux4ong:~$ sudo su
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:nilarimogard/webupd8
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:ubuntu-on-rails/ppa
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:danielrichter2007/grub-customizer
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:webupd8team/java
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:bit-team/stable
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:synapse-core/testing
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:jtaylor/keepass
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:shutter/ppa
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:maarten-baert/simplescreenrecorder
root@linux4ong:/home/graciaambelsahara# apt-add-repository ppa:x2go/stable
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:noobslab/apps
root@linux4ong:/home/graciaambelsahara# add-apt-repository ppa:yannubuntu/boot-repair
{CODE}
Press enter each time when requested.
After keys are imported, you can quit from the root session with "exit":
{CODE(colors=bash, wrap="1")}
root@linux4ong:/home/graciaambelsahara# exit
exit
graciaambelsahara@linux4ong:/home/xavi#
{CODE}
Nowadays, you can update your sources list, and install the suggested package list.