This demonstrates reading user input in a Bash script and echoing it back.

This demonstrates performing arithmetic operations in Bash using the $((...)) syntax.

This demonstrates various operations on a Bash associative array (dictionary), including accessing, retrieving, and manipulating key-value pairs.

This demonstrates assigning a default value to a variable using the := operator in parameter expansion.

This demonstrates assignment a value from standard input.

This demonstrates the use of ANSI-C quoting to include special characters like newline and tab in a string.

This demonstrates the usage of $* to represent all positional arguments as a single string.

This demonstrates accessing the name of the currently executing script using the built-in variable $0.

This Bash pattern demonstrates matching specific filenames using character classes in globbing.

This demonstrates how to declare and initialize an array in Bash.

This demonstrates printing the value of the HOME environment variable.

This demonstrates initializing an array in Bash with three elements.

This demonstrates various array operations in Bash, including pushing, removing, duplicating, concatenating, and reading from a file.

This demonstrates creating and populating an associative array in Bash.

This demonstrates setting an environment variable using the export command.

This demonstrates the usage of history expansion to refer to the nth previous command.

This code uses a regular expression to extract an email address from a string, demonstrating regex-based pattern matching and extraction in Bash.

This demonstrates extracting the filename from the last argument of the previous command using !$:t.

This demonstrates the usage of positional arguments in Bash scripts and functions.

This demonstrates extracting a substring from a variable in Bash using parameter expansion.