The answer is Yes and No. Point and click technology can be incorporated into Linux, or it can be run as a basic command line. Multiple "point and click" GUIs are available with the most popular being gnome and KDE. For example, Ubuntu runs gnome, but people who prefer the KDE GUI can download Kubuntu.
Yes, Linux does have a graphical user interface. Atually, it has dozens, if not hundreds, of desktop environments and window managers. They almost all invariably run on an X server.
Keep in mind unlike in Windows, to Linux Xorg and whatever desktop or WM is run is basically just another program to the system, and it is entirely optional.
MS-DOS was user unfriendly it did not have the option to click on icons
You need to be more clear in what type of "interface" you are inquiring about. Linux has it's own API (Application Programming Interface) and ABI (Application Binary Interface). If you are referring to the user interface, Linux can have a GUI, a command line, or even no interface at all.
There are two types of interface.. 1. User Interface 2. Application Interface
There is no singular user interface for Linux. Linux itself makes no requirement for a user interface. There are plenty of interfaces: GNOME, KDE, Xfce, LXDE, BASH, ZSH, CSH, TSH, FISH, and dozens of window managers.
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.
A terminal is a Command Line Interface (CLI).
A shell in Linux is the interpreter that provides a commandline interface (CLI). There are many kinds of shells.
A greeter provides a login screen interface.
How much old do you mean by old? Well, before Gnome and KDE, there was the Command Line Interface (CLI). MCC Interim Linux was the first linux distribution, released in February 1992 used the CLI.
The Linux kernel itself does not include a GUI. However, most Linux distributions have one. Yes, Linux have a GUI.Today many kind of vendor available in Linux Like Redhat fedora,Ubuntu,Suse, Mandriva and many more. Those Linux version provide Cmd and GUI mode for work.
In Linux, after the user log in to a terminal hi/she receives a user interface called Shell
ifconfig