Linux script instance while, linux script while

Linux script instance while, linux script while

Write a script. After the script is executed, print a row with the prompt "Please input a number:". Ask the user to enter a value, then print the value, and then ask the user to enter a value again. Until the user enters "end" to stop

Note: 1. unset Num can or cannot be used. unset is used to cancel variable settings to prevent the impact of previous values on the script program.

2. Note that there is a space between the if statement and the condition. There must be a space between the condition and the brackets on both sides.

3. Do not wrap echo-n automatically

Running result: