Professional Shell Scripting Interview Questions & Answers:

1. How do you write a while loop in shell?

while {condition} do {statement} done

2. How does a case statement look in shell scripts?

case {variable} in {possible-value-1}) {statement};; {possible-value-2}) {statement};; esac

3. How do you read keyboard input in shell scripts?

read {variable-name}

4. How do you define a function in a shell script?

function-name() { #some code here return }

5. How do you stop all the processes, except the shell window?

kill 0

6. How do you find out about all running processes?

ps -ag

7. How do you stop a process?

kill pid

8. What's the command to find out today's date?

date

9. What's the command to find out users on the system?

who

10. How do you find out the current directory you're in?

pwd