Linux Bash Scripting

Write a bash shell script as a plain text file ending with .sh, add a shebang to set the interpreter, then chmod +x and run with ./script.sh.

Create and run a simple bash script by writing a two-line file, saving it as myscript.sh, making it executable, and printing a hello world message.

Learn to read user input in a bash script using read name and display 'your name is $name'. Create name.sh, make it executable, and run to see the input.

Create a shell menu script that prompts user input to choose a color from a list, stores the selection in a variable, makes it executable, and displays the chosen color.

Explore for loops in Linux Bash scripting by looping over names, files, and numbers with echo, then run the script to see repeated commands and file listings.

Explore conditional execution in bash using an if statement that checks a user input guess against 6, executing commands when true and guiding responses for other choices.

Define and loop over a shell list, printing each item with a color variable, and access specific elements by zero-based index; use dash comments to ignore lines.

Learn to define and manipulate strings in bash, output hello world, and create new strings by slicing from index 0 to 5 or 5 to 7.

Define and call bash functions, pass parameters using $1 and $2, and distinguish local versus global variables to manage scope and reusable function output.

Learn to read and write files in bash scripts by using echo, redirection, and making them executable; control file contents with conditional if exists and finish statements.

Save command outputs to a file from the terminal, creating outputs60 and storing results there; inspect the file to verify outputs, and apply to any command, including date or ifconfig.

Capture a program’s standard output into a variable, echo it, and filter results with grep and pipes; subset selections include network connections, dates, and file contents via command substitution.