Chapter 2:
Getting to the Shell:
- In past: Linux console terminal where shell commands are entered
- Command line environment and how to 'reach it' ?
- Terminal emulation packages ?
Reaching the command line
- CLI = Command Line Interface ; alowed text inputs/outputs only, plus some rudimentary graphics
- Dumb Terminal = dumb text input/output environment; EG. A monitor and keyboard connected to Unix system vaia coummunication cable in the past days
- console = physical terminal
- shell = command line interpreter
- To enter shell commands, still need a text display to access the shell's CLI , problem now is getting to one? 'makes no sense!'
- "sometimes finding a way to get a CLI in a Linux distribution is not an easy task" page-23
Console Terminals
- Take linux system out of graphical desktop mode and place it in text mode; the text mode called the Linux Console
- The Linux console emulates the old days of a hard-wired "console terminal" and is a direct interface to the linux system;
- Linux creates something called Virtual Consoles when it starts
- A virtual console is a terminal session that runs in linux memory -https://www.computernetworkingnotes.com/linux-tutorials/linux-virtual-console-and-terminal-explained.html
console: physical device that emulates a terminal
terminal: a text mode only for writing commands
Graphical Terminals
- Alternative to using virtual console
- aka Terminal Emulation Package
Graphical terminal emulators can be thought as CLI terminials "in the GUI"
Virtual console terminals as CLI terminals "outside the GUI"
Accessing CLI via a Linux Console Terminal
Ctrl+Alt+ function key F1 through F7
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