File system access and navigation under Unity is designed to control user habits. Historically, Linux has always had a more rigidly structured approach to file systems than, say, Microsoft Windows. But with Unity users are guided into using the Home folder — by default, the icon immediately below the Dash icon. This strongly encourages users to create folders and store files within the Home folder; navigation to folders above that, such as the operating system directories, is from the Home folder. The options are displayed in a vertical navigation panel to the left of the Home directory window. An alternate means of accessing user folders and files is available via the Dash File & Folders lens.
Placing the mouse cursor on the Unity desktop upper menu bar with an empty desktop will reveal another hidden feature — a desktop menu. This provides more direct access to the upper levels of the file system than the Home folder.
The online help file — Ubuntu Desktop Guide
Clicking on Help from the desktop menu and then clicking a further (seemingly redundant) choice of Ubuntu Help displays the Ubuntu Desktop Guide for 12.04. This seems to be well organised and quite comprehensive, and is definitely a recommended read. For example under ‘Desktop, apps & windows’ there’s a guide to ‘Useful keyboard shortcuts’. GNOME 2 users can find a similar guide to GNOME via the menu selections Applications / Accessories / Help.
Remmina remote desktop client
Remmina was considered as the replacement for TSClient as the default remote desktop client in Ubuntu 11.04. As it turned out, Vinagre was chosen for 11.04, but Remmina has made it into Precise Pangolin. Remmina supports the RDP, VNC, NX, XDMCP, SSH, Avahi and Telepathy remote desktop protocols.
The Remmina remote desktop client supports a range of remote protocols, allowing IT support staff to perform remote maintenance tasks on computers running different operating systems
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