January 2021
Intermediate to advanced
832 pages
18h 3m
English
Content preview from Linux Command Line and Shell Scripting Bible, 4th Edition
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CHAPTER 2Getting to the Shell
In the old days of Linux, system administrators, programmers, and system users all sat at something called a Linux console terminal entering shell commands and viewing text output. These days, with graphical desktop environments, it's getting harder to find a shell prompt on the system in order to enter shell commands. This chapter discusses what is required to reach a command-line environment. And it walks you through a few terminal emulation packages you may run into in the various Linux distributions.
Reaching the Command Line
Before the days of graphical desktops, the only way to interact with a Unix system was through a text command-line interface (CLI) provided by the shell. The CLI allowed text input only and could display only text and rudimentary graphics output.
Because of these restrictions, output devices were not very fancy. Often, you needed only a simple dumb terminal to interact with the Unix system. A dumb terminal was usually nothing more than a monitor and keyboard connected to the Unix system via a communication cable (usually a multiwire serial cable). This simple combination provided an easy way to enter text data into the Unix system and view text results.
As you well know, things ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.