Unix Quiz

1. Which keyword is used to remove the variable?

remove
readonly
unset
delete

2. Which of the following is known as heart of the unix operating system?

Shell
Kernel
Commands
Files

3. Which of the following statement is used to terminate the execution of the entire loop?

continue
terminate
this
break

4. The original Unix shell was written in the mid ________.

1960s
1970s
1980s
1990s

5. How many stream Unix program has?

2
3
4
5

6. $# is used to show?

The number of arguments supplied to a script.
The filename of the current script.
The exit status of the last command executed.
The process number of the last background command

7. Which of the following command is used to display the environment variables only?

sh
set
env
var

8. Which of the following loops is not available in shell?

The for loop
The until loop
The select loop
The foreach loop

9. Which of the following statement causes the current iteration of the loop to exit, rather than the entire loop?

Continue
break
return
goto

10. The most common file type is ___.

ordinary file
directory file
device file
ordinary file and directory file