Shell Script Simple Quiz
Linux shell script allows the user to check for the answer until the correct answer given by the user. We are using the While loop to achieve it. The while loop enables you to execute a set of commands repeatedly until some condition occurs.
# !/bin/bash echo What is the National Animal of INDIA read ans while test $ans != tiger do echo No, that\'s not it. Try again. read ans done echo That is correct.
Here is the sample output of the above script
More ways to use this while loop.
You can use while loop will print welcome 5 times on screen: x=1; while [ $x -le 5 ]; do echo "Welcome $x times" $(( x++ )); done
You can also use it while as infinite loops: while :; do echo 'Press <CTRL+C> to exit.'; sleep 1; done