如何在Bash中使用read命令？

echo "Please enter your name:"
read user_name
echo "Hello, $user_name!"

file="data.txt"
while IFS= read -r line
do
  echo "Line: $line"
done < "$file"

echo "Please enter your name and age:"
read user_name user_age
echo "Hello, $user_name! You are $user_age years old."

read -p "Please enter your name: " user_name
echo "Hello, $user_name!"

read -s -p "Please enter your password: " user_password
echo "Password entered: $user_password"

read -t 5 -p "Please enter your name: " user_name
echo "Hello, $user_name!"

read -n 3 -p "Please enter your name: " user_name
echo "Hello, $user_name!"

read -d ":" user_name user_age
echo "Hello, $user_name! You are $user_age years old."

exec 3< data.txt
read -u 3 line
echo "Line: $line"

read -a numbers <<< "1 2 3 4 5"
echo "The first number is: ${numbers[0]}"