Bash Commands and Scripting - from Beginner to Expert

Explore the basics of a terminal with Bash, including the prompt, single input line, navigating commands with left/right arrows, retrieving history with up/down, and canceling input with Ctrl+C.

Learn bash navigation with pwd, ls, cd, open, clear, and cat. The lesson covers Mac bash switching, tab completion, and viewing file contents.

Learn to modify and manage data in bash by copying, creating, moving, editing, and deleting files and folders using cp, mv, touch, mkdir, and nano.

Learn to use bash flags and the man page with ls and cp, including -a, -l, and -R, and understand flag order and combinations.

Apply sed to substitute blue with pink, then edit in place with -i and a backup extension, guided by the manual and flag usage.

Learn how to read, write, and pipe data in Bash using input and output redirection, and chain commands like cat, sed, and tr to create new files.

Chain bash commands with semicolon and &&, navigate with cd and cd -, open folders, and prepare aliases in the bash profile.

Create aliases with the alias keyword and save them in .bash_profile for persistence. Source the profile to apply changes, and recognize differences with zsh and the bash functions lesson.

Learn to write bash functions that take parameters ($1, $2) beyond aliases for reusable tasks. Explore grep with color, line numbers, and case-insensitive matching.

Create your own bash profile by defining aliases and functions, and quickly access tasks with prof, s, lk, show, and py while organizing four folders (opensource, projects, playground, enterprise).

Master awk and gawk to extract rows and columns from tab-separated data, pipe outputs, and monitor processes with forever and top in bash.

Learn to use wget and curl to download web pages via HTTP and FTP, craft HTTP requests, and use traceroute to diagnose network paths.

Master bash basics by using tree to map folder structures, free and memory pressure for memory insights, and ifconfig to view network interfaces.

Master bash logical operators by using if, else, and case statements, comparing strings and numbers with arithmetic expansion, handling parameters with $@ and -z, and wiring a case-driven process controller.

Master bash error handling with if statements and the $? exit code, storing the error after commands, and checking for zero to indicate success, noting exit statuses and grep's codes.

Master bash loops by building for and while loops with if-like syntax, using break, functions, and parameterized iterations to control how many beeps run.

Learn how to use the export command to create environment variables in bash, share them with subprocesses, manage the path, and store secrets responsibly in development while avoiding production pitfalls.

Discover how the which command reveals a program's location in your path, with examples like Python and Gatsby, and how the --version flag (with -v) prints versions for compatibility.

Learn to use lsof to list open files and filter listening ports, identify the related process IDs, and manage processes with kill and killall.

Explore chmod fundamentals, covering symbolic and octal permissions for user, group, and others. Practice setting execute, read, and write, with cautions against 777 and recursive usage.

Customize the Bash prompt by defining color variables and formatting codes to display the user, host, and current directory, and use prompt_command to run a function after each command.

Conclude the bash commands and scripting course from beginner to expert, inviting questions and comments via email as you enjoy bash scripting.