Do you mean a change between GUI and console mode, then try the following, Press Ctrl+F1 to switch from GUI mode to console mode. F1 to F6 are console modes and use Ctrl+F7 to switch back to the GUI mode. Or if you mean, about changing the default mode (booting) from GUI to Console then try this, go to /etc/inittab file. change the runlevel id: to 3 for booting in Full-User mode.
one is (dcpromo)command line interface and other is GUI mode. both have same roles
There is a GUI tool that you can use, or try the 'passwd' command in a terminal window.
A GUI is typically not operated using text commands, so your question makes little sense. To start the "GUI" on most Unix and Linux systems, you need to launch the X server. Most systems include a simple script, "startx", that will do everything automatically for you. You can also launch the name of the display manager, such as KDM or GDM, manually. When you start the GUI, you are, of course, expected to actually use a GUI, not the command line. Most interfaces will provide some sort of button or link for you to click and shut down the system or exit to the command prompt.
description of guimode
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.
Many operating systems provide both a command line and a GUI interface. Windows, for instance, is obviously a GUI, however cmd.exe provides access to the underlying command line interface.
Because a GUI is just executing commands in the command line.
Both, all versions have a command line, and every version but minimal and server have a gui
No, GUI stands for Graphic User Interface. It contains graphic contents and you can use all features of OS using that interface only. However you always have a terminal, and you can do things by commandline if you wish.
Yes, but it also has a command line.
A GUI can be used in Unix (in fact, several). Most power users don't use the GUI because it can be too limiting. The power of what you can do in Unix is at the command line, not using a GUI to click on buttons. Of course, this could be said about most operating systems; the GUI is there for user convenience but most administrators use the command line for most of their work.
Recovery Console