Olete.in – MCQs, Mock Tests & Government Job Prep | Shell Scripting Shell Scripting Mcq Question Set 1

What is a shell script?

1. group of commands
2. a file containing special symbols
3. a file containing a series of commands
4. group of functions

✅ Correct Answer: 3

Shell scripts need to be saved with an extension .sh .

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Shell scripts are executed in a separate child shell process.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

The first line in any shell script begins with a _____

1. &
2. !
3. $
4. #

✅ Correct Answer: 4

To run the script, we should make it executable first by using _____

1. chmod +x
2. chmod +r
3. chmod +w
4. chmod +rwx

✅ Correct Answer: 1

To spawn a child of our own choice for running the script, we can use ___ command.

1. ps
2. pr
3. sh
4. $$

✅ Correct Answer: 3

Which command is used for making the scripts interactive?

1. ip
2. input
3. read
4. Write (append)

✅ Correct Answer: 3

read command is shell’s internal tool.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

A single read statement can be used with one or more variables.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

What are positional parameters?

1. special variables for assigning arguments from the command line
2. pattern matching parameters
3. special variables for reading user input
4. special variables and patterns

✅ Correct Answer: 1

The first argument is read by the shell into the parameter ___

1. 1$
2. $3
3. $$
4. $1

✅ Correct Answer: 4

The complete set of positional parameters is stored in ______ as a single string.

1. $n
2. $#
3. $*
4. $$

✅ Correct Answer: 3

Which of the following is used for storing the number of positional parameters?

1. $n
2. $#
3. $*
4. $2

✅ Correct Answer: 2

Which of the following commands let us perform a set of instructions repeatedly?

1. for
2. while
3. until
4. for, while, until

✅ Correct Answer: 4

Which of the following keywords are used in while loop?

1. do
2. done
3. then
4. do and done

✅ Correct Answer: 4

until loop operates with a reverse logic as used in while loop.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Which one of the following is used for looping with a list?

1. while
2. until
3. case
4. for

✅ Correct Answer: 4

Which of the following loop statements uses do and done keyword?

1. for
2. while
3. case
4. for and while

✅ Correct Answer: 4

Which command is used for changing filename extensions?

1. chown
2. rename
3. basename
4. rm

✅ Correct Answer: 3

Which command is used by the shell for manipulating positional parameters?

1. set
2. cut
3. case
4. paste

✅ Correct Answer: 1

____ statement is used for shifting arguments left.

1. set
2. shift
3. cut
4. paste

✅ Correct Answer: 2

Which one of the following is an internal command?

1. cut
2. expr
3. set
4. isMaster

✅ Correct Answer: 3

Which symbol is used with the set command for command substitution?

1. –
2. —
3. ??
4. _

✅ Correct Answer: 2

The ____ allows us to read data from the same file containing the script.

1. >>
2. <<
3. !!
4. —

✅ Correct Answer: 2

Any command using standard input can take the input from here document.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Which of the following command doesn’t accept a filename as an argument?

1. cut
2. ls
3. paste
4. mailx

✅ Correct Answer: 4

We can use the here document with interactive programs also.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

____ command is the appropriate way to interrupt a program.

1. kill
2. SIGKILL
3. INT
4. trap

✅ Correct Answer: 4

Which of the following option is used with a set for debugging shell scripts?

1. -a
2. -x
3. -d
4. -e

✅ Correct Answer: 2

Suppose x =10, then what will be the value of x$x$?

1. undefined
2. erroneous
3. 100
4. x10$

✅ Correct Answer: 4

Given x=10 then, The given statement is ____

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

A shell script stopped running when we change its name. Why?

1. location of the file changed
2. we can’t change the name of the script
3. $0 was used in the script
4. many possible reasons

✅ Correct Answer: 3

Where is the exit status of a command stored?

1. $0
2. $>
3. $1
4. $?

✅ Correct Answer: 4

Which of the following is false?

1. here document provides standard input to any script non interactively
2. read command is used for making scripts interactive
3. $* stores the number of arguments specified
4. && and || are logical operators

✅ Correct Answer: 3

test statement cannot ______

1. compare two numbers
2. compare two strings
3. compare two files
4. check a file’s attributes

✅ Correct Answer: 3

___ option is used with a test for checking if the file exists and has the size greater than zero.

1. -f
2. -r
3. -e
4. -s

✅ Correct Answer: 4

Every time shift command is used, the leftmost variable is lost.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Shell provides us with an interface to the operating system.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

On a UNIX system, there can be ____ shells running simultaneously.

1. 1
2. 2
3. many
4. 4

✅ Correct Answer: 3

There can be multiple kernels on a single UNIX system.

1. True
2. FALSE
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

The prompt issued by the shell is called ______

1. prompt
2. command translator
3. command prompt
4. command executor

✅ Correct Answer: 3

In UNIX there are ___ major types of shells.

1. 2
2. 3
3. 4
4. many

✅ Correct Answer: 1

What is the default symbol for command prompt in Bourne shell?

1. $
2. %
3. #
4. @

✅ Correct Answer: 1

What is the default symbol for command prompt in C shell?

1. $
2. %
3. #
4. @a = split(/s/, $str).

✅ Correct Answer: 2

Which one of the following command will display the name of the shell we are working on?

1. echo shell
2. echo $
3. echo $SHELL
4. echo $$

✅ Correct Answer: 3

Which shell is the most common and best to use?

1. Korn shell
2. POSIX shell
3. C shell
4. Bash shell

✅ Correct Answer: 4

Which command does not terminates unless we log out of the system?

1. history
2. shell
3. echo
4. login

✅ Correct Answer: 2

In Shell’s interpretive cycle, the shell first scans for ____ in the entered command.

1. characters
2. priority
3. meta-characters
4. wildcards

✅ Correct Answer: 3

Which of the following expression is a correct wildcard pattern if we want an expression in which the last character is not numeric?

1. *[!0]
2. *[0-9]
3. [0-9]
4. *[!0-9]

✅ Correct Answer: 4

The shell waits for the command to complete and normally can’t do any work while the command is executing.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1