Shells, Terminals, and Virtual Consoles
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There are multiple ways in which we can interact with the shell in Linux. The three most common ways are:
A Shell prompt
Terminal window
Virtual console
You will most commonly run into the Shell prompt if you are using a distribution with no graphical interface (or one where the GUI has been disabled). You will simply be presented with a text based command prompt, where you type in commands singularly:
The default prompt for a regular user is a dollar sign:
For the root user, the default prompt is the pound sign (#), which you might know as the number sign, or perhaps the hashtag:
We'll delve into standard users and the root user in an upcoming section.
On the majority of Linux setups, the $ and # prompts are placed after a string showing your current username, the name of the system, and the directory you're currently in. So, if the user bennett is having a session on a computer named example and is currently in the /usr/share/ directory, it'd look a bit like this:
If your Linux system has a GUI installed, popping open a Terminal Emulator (often just called the Terminal Window, or even just the Terminal) to kick off a shell is pretty straightforward. Most times, you can:
Right-click the desktop Check out the dropdown menu that appears. If you spot options like Open in Terminal, Shells, New Terminal, Terminal Window, Xterm, or something along those lines, give it a click. Some versions of Linux might not have this option
Click the panel menu A lot of Linux desktops have a panel, either at the top or bottom of your screen, acting as a handy launchpad for applications. On systems with the GNOME 2 desktop, for instance, you can navigate:
Applications ➪ System Tools ➪ Terminal
If you're on GNOME 3, hit the Activities menu, type in 'Terminal', and hit Enter.
Once you have the Terminal open, you interact with it in much the same way as you would the shell prompt:
In Linux distributions that feature a graphical desktop, you'll usually find that there are multiple virtual consoles ticking away in the background, ready and waiting for you to use. These virtual consoles let you have several shell sessions up and running alongside your graphical interface, all at the same time.
Switching between these virtual consoles is a breeze – just hold down Ctrl and Alt, and then tap one of the F1 to F6 function keys.
To paint a picture, if you’re using Fedora, a combination of Ctrl + Alt + F1 (or F2, F3, F4, and so on, right up to F6) will whisk you away to one of the available seven virtual consoles. You’ll find the graphical user interface usually hanging out on one of the first two virtual consoles, while the remaining five are where your text-based adventures unfold. And when you’re ready to head back to the GUI (and it’s up and running), a quick Ctrl + Alt + F1 should do the trick!
On some systems, the GUI may run on a different virtual console, such as Virtual Console 2 (Ctrl + Alt + F2).
Hold down the Ctrl + Alt keys and press F3. You should see a plain-text login prompt
Log in using your username and password. Try a few commands out
When you are finished, type exit to exit the shell and then press Ctrl + Alt + F1 or Ctrl + Alt + F2 to return to your graphical desktop interface
You can go back and forth between these consoles as much as you like!!
