There are many user interfaces for both unix and Linux and most can be used on both. For example kde,gnome,bash shell, ect.
Yes. Linux is fully supported by Java.
Most Logitech webcams are supported by Linux.
The ZSR4154WE is not currently supported by any Linux-based firmware.
There are several different graphical interfaces for Linux, each of which have their features in different locations. You must specify what interface you are using.
No. There is no single user interface for Linux. GNOME. KDE, Xfce, Fluxbox, and CDE are all examples of user interfaces / desktop environments for Linux.
Yes. The Linux kernel has supported the IPv6 protocol since 1996.
The NTFS file system is supported in Linux by both a kernel module and several userspace programs. It is not supported as a root file system and is not recommended for permanent file storage.
The first file system Linux supported was the MINIX file system.
The command ifconfig will tell you the MAC address of whatever interfaces are active.
Yes. Many touchscreens and wacom tablets are supported by Linux. In the "Related links" section below is an index of some supported tablet PC models (may be outdated and not list newer models).
No. Those user interfaces are copyrighted. However, some distros have fairly similar interfaces that you can use instead.