variables

       Write-Host "The value is: $my_variable"
3. Examples:
Using a variable in a file path:
Code

     directory="my_directory"
     filename="my_file.txt"
     full_path="$directory/$filename"
     echo "The full path is: $full_path"
Using a variable in a command-line argument:
Code

     port="8080"
     java -jar my_app.jar -p $port
4. Considerations:
Quoting: When dealing with variables containing spaces, special characters, or command substitutions, it's often necessary to quote the variable to ensure it is treated correctly. Double quotes are generally preferred in Bash because they allow for command substitution within the value:
Code

     variable_with_spaces="This variable has spaces"
     echo "The value is: $variable_with_spaces"
Command Substitution: You can also use command substitution to assign the output of a command to a variable:
Code

     current_directory=$(pwd)
     echo "The current directory is: $current_directory"
Environment Variables: You can also use environment variables. They are typically uppercase and prefixed with a dollar sign (e.g., $PATH, $HOME).
Code

     echo "My home directory is: $HOME"