Opera Software source in Ubuntu Linux

For more information, visit: http://deb.opera.com/ Opera Official sources: Latest Version: Deb http://deb.opera.com/opera/ unstable non-free Or select a stable version: Deb http://deb.opera.com/opera/ stable non-free (Modify the source list in the sources. list file and add the opera source) command: Sudo gedit/etc/APT/sources. List (Back up the current source list) command: Sudo CP/etc/APT/sources. LIST/etc/APT/sources. List. Backup Update Software: Sudo apt-Get update Next: sudo apt-Get install Opera ------------------------------- Command for adding public key: $ GPG -- keyserver subkeys.pgp.net -- Recv 4f6c1e86 $ GPG -- export -- armor 4f6c1e86 | Sudo apt-key add- ------------------------------- For error messages: Reading the package list... complete W: GPG signature verification error: http://deb.opera.com unstable release: because there is no public key, The following signatures cannot be verified: no_pubkey 03343153 6a421_1 W: You may need to run apt-Get update to solve these problems. ------------------------------- You need to4f6c1e86 "Is replaced with the last eight digits of the string after" no_pubkey ", that is: $ GPG -- keyserver subkeys.pgp.net -- Recv 6a421_1 $ GPG -- export -- armor 6a421_1 | Sudo apt-key add- In this way, you can directly update it. The advantage is that you do not need to pay attention to future upgrades and it will automatically complete. Of course, you must save the customized Directories Before. /Home/*/. Opera Oh ~ PS: Set opera as the default browser To set opera as the default browser, do the following: Go to "System --> preferences --> preferred Application Program " On the "Web Browser" tab, select "Custom" and enter:Opera-Newpage "% s" (Original address: http://hi.baidu.com/bobo55/blog/item/b06f020818611ad662d986d5.html)