If you are looking for how to JOIN .rar files in Ubuntu and it asks for a password that does not exist, visit this post for the instruction of how to do so.
I have to post this because there are so many searches looking for how to open Rar files with password protection. I cannot find a way to create .rar files with password but opening was not a problem at all.
- First, make sure you have installed the unrar package. If not, visit this post for instructions.
- Open the .rar file by double clicking on the file.
- To open a protected file within the archive, double click it. A password dialog will pop-up.

- Enter your password and hit enter. Choose your desire location and hit enter. You are done.
I am not sure why so many have problems with this. Again, I might be ignorance and I’m just not addressing the right problem here. If not, please let me know what the real deal is.
I would also like to check out how to join split .rar files. I will post something soon.