Dolphin is KDE's file manager, and is one of the many applications included in the KDE Applications suite of utilities. Its usage is very similar to other file managers we've discussed earlier in this book (Nemo and Caja), and it integrates well with the rest of the KDE desktop. The following screenshot shows KDE's file manager, Dolphin:

Just as in other file managers, Dolphin features several different views, such as Icons, Default, and Compact. You can switch between these modes using the three icons on the top-right corner of the Dolphin window, and you can also adjust the size of the icons by adjusting the slider at the bottom of the window. The view modes won't stick between folders, so you'll notice that as you navigate around the view mode will change. To make your desired view mode stick, click on Settings and select Configure Dolphin. In the new window that appears, you can make your current view mode the default by clicking on the General section, and then select the Use common properties for all folders option. While you have this window open, feel free to peruse the available options to customize Dolphin further—the options featured here are quite extensive.

On the left-hand side of the Dolphin window, you'll notice a pane featuring shortcut icons to various areas of your filesystem. Removable drives appear under Devices, and favorite folders appear under Places. To add a new folder as a favorite, simply drag it into the pane and drop it where you'd like it to appear. If you right-click on an existing icon, you'll have a chance to remove it.