installing opera browser on debian sid sidux

add the line to /etc/apt/sources.list file :deb http://deb.opera.com/opera sid non-free 
use the vi editor to write the following line to the /etc/apt/sources.list.d/sidux.list file:
deb http://deb.opera.com/opera sid non-free.
then import the keys using the following commands :
gpg –keyserver subkeys.pgp.net –recv-key 6A423791
gpg –fingerprint 6A423791
gpg –armor –export 6A423791| apt-key add –
run the following command at the root level
#apt-get update
#apt-get install opera
when the job is done type at the command prompt
$opera
agree to the license terms and opera is yours.