By William E. Shotts Jr.
You've skilled the glossy, point-and-click floor of your Linux computer—now dive lower than and discover its depths with the facility of the command line.
The Linux Command Line takes you out of your first actual terminal keystrokes to writing complete courses in Bash, the preferred Linux shell. alongside the way in which you'll examine the undying talents passed down by way of generations of gray-bearded, mouse-shunning authorities: dossier navigation, setting configuration, command chaining, development matching with average expressions, and more.
In addition to that useful wisdom, writer William Shotts finds the philosophy in the back of those instruments and the wealthy historical past that your computing device Linux desktop has inherited from Unix supercomputers of yore.
As you're making your method throughout the book's brief, easily-digestible chapters, you'll learn the way to:
-Create and delete records, directories, and symlinks
-Administer your procedure, together with networking, package deal set up, and procedure management
-Use commonplace enter and output, redirection, and pipelines
-Edit documents with Vi, the world's preferred textual content editor
-Write shell scripts to automate universal or dull tasks
-Slice and cube textual content documents with minimize, paste, grep, patch, and sed
Once you conquer your preliminary "shell shock," you'll locate that the command line is a traditional and expressive solution to speak along with your laptop. simply don't be stunned in case your mouse starts off to assemble dirt.
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Extra resources for The Linux Command Line: A Complete Introduction
The name bash is an acronym for Bourne Again Shell, a reference to the fact that bash is an enhanced replacement for sh, the original Unix shell program written by Steve Bourne. Terminal Emulators When using a graphical user interface, we need another program called a terminal emulator to interact with the shell. If we look through our desktop menus, we will probably find one. KDE uses konsole and GNOME uses gnome-terminal, though it’s likely called simply “terminal” on our menu. A number of other terminal emulators are available for Linux, but they all do basically the same thing: give us access to the shell.
If, however, you prefer to use “GNU/Linux” instead, please perform a mental search and replace while reading this book. I won’t mind. Introduction xxix PART 1 LEARNING THE SHELL WHAT IS THE SHELL? When we speak of the command line, we are really referring to the shell. The shell is a program that takes keyboard commands and passes them to the operating system to carry out. Almost all Linux distributions supply a shell program from the GNU Project called bash. The name bash is an acronym for Bourne Again Shell, a reference to the fact that bash is an enhanced replacement for sh, the original Unix shell program written by Steve Bourne.
We could do that two different ways, either with an absolute pathname: [me@linuxbox bin]$ cd /usr [me@linuxbox usr]$ pwd /usr or with a relative pathname: [me@linuxbox bin]$ cd .. [me@linuxbox usr]$ pwd /usr Two different methods produce identical results. Which one should we use? The one that requires the least typing! /bin [me@linuxbox bin]$ pwd /usr/bin Now, there is something important that I must point out here. / because it is implied. Typing [me@linuxbox usr]$ cd bin does the same thing.