Bash Shell Programming from the Ground Up

Name: Bash Shell Programming from the Ground Up
Rating: 4.4 (41 reviews)

Master the shell by thoroughly understanding its features - both on the command line (CLI) and through shell scripting.

Created byRalph Jensen

Last updated 6/2020

English

What you'll learn

Thanks to a focus on detail you will acquire a solid grasp of the Bash shell - its behavior, its programming language as well as important Linux commands.

Course content

21 sections • 88 lectures • 19h 34m total length

Welcome and Introduction12:13
Big Picture - Where Does the Shell Fit in?7:49
What is Bash?15:04

pwd, ls, cd, echo, man; tilde (~), .. and ., *16:55
pwd, ls, cd, echo; tilde (~), .. and .
less/more, tree, alias; variables; $BASH, pipes ( | ), filters15:44
Explore basic Bash concepts like variables, pipes, filters, and aliases, and see how to use less, more, and tree to view commands and the filesystem.
mkdir, whoami, cat, touch, cp, rm, rmdir; >, >>16:33
more about ls -l, file access permissions, chmod15:39
learn how to read ls -l output and interpret file types and permissions, including user, group, and others, and use chmod to modify rights and make scripts executable.
wc -l12:59

Noteworthy Characters15:44
metacharacters: | & ; < > space tab newline
and: ~ $ #
Quoting: strong and weak quoting, the backslash (\)10:16
strong quoting - single quotes protect everything between them from the shell
weak quoting - double quotes protect everything except the $, the backslash (\) and (not so relevant) the back quotes (``)
backslash - protects the next character from the shell
Quoting and variable expansion15:13
(Not so) special case: Filenames and strings containing spaces (and potentially) other weird characters.
Command Substitution, part 1 - new commands seq, cut, sleep10:36
Learn command substitution in Bash by capturing output with $(seq 1 3). Use cut and sleep to format results and drive simple arithmetic in for loops.
Control operators, shell expansions13:57
simple commands, control operators: || & && ; ;; ;& ;;& | |& <newline>
brace expansion, tilde expansion, parameter/variable expansion, command substitution, arithmetic expansion, filename expansion, quote removal

standard input, standard output, standard error14:57
Every program:
- reads input from its standard input channel (stdin, 0 - usually the keyboard),
- writes its output to the standard output channel (stdout, 1 - usually the screen)
- sends error messages to the standard error channel (stderr, 2 - usually also the screen).
All channels can be directed elsewhere (or even closed).
Pipelines; error channel redirection14:35
Pipes and other redirections in action. Use |& to redirect both stdout and stderr into a pipeline.

Requirements

No prior knowledge required.
You should have Linux installed somewhere and when you open a terminal it runs Bash - check it out: $ echo $SHELL

Description

You'll finish this course with a solid grasp on the Bash shell, it's programming environment and syntax. In addition you'll learn many essential Linux commands. The course essentially follows the outline of the Bash Reference Manual and the Bash manual page but it's easier to follow due to a hands-on approach and many examples.

Who this course is for:

Novices, intermediates, Linux friends and enthusiasts.
People interested in learning how to program the Linux Bash shell.
People interested in learning programming concepts.

Bash Shell Programming from the Ground Up

What you'll learn

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Course content

Introduction3 lectures • 35min

Some useful Linux commands and Bash features5 lectures • 1hr 18min

Enter the Shell5 lectures • 1hr 6min

Redirection of input and output2 lectures • 30min

Project using filters5 lectures • 44min

The iconic text and code editor: vi2 lectures • 37min

Lists of commands3 lectures • 38min

The exit status2 lectures • 31min

Searching strings for patterns1 lecture • 14min

Introduction to shell scripts2 lectures • 28min

Requirements

Description

Who this course is for: