How to Install Opera Browser on kali Linux 2019.2 as Root?
Step 1: Open your Browser, and then Go to https://google.com
Step 2: Do a search for 'Download Opera Browser', and then open the first link.
Step 3: Click on the 'Download Opera' button.
Step 4: On the Pop Up, click on 'save file', and then click on 'ok' button.
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https://www.youtube.com/watch?v=5H8LdZ4HKHk