Hi,
I made a lot of search about adding contrib and non-free repositories of Debian via command line, but I did not find any way. I found this about adding repository from shell, however it works only for PPA. Is there a smart way to append contrib and non-free keyword to repository in /etc/apt/sources.list?
In particular, I'm interested about installing flashplayer-nonfree and rar and untar packages.
Thank you
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