Scripting Unit 7 and 8 Practical Revision

How do you print the variable value. (for example: num=5)

• @num

• $num

• &num

• num

Rohan wants to accept an input data from user and print it on screen. How does he do it? Choose the correct option.

• echo Enter data

  read data

  echo $data

• echo Enter data

  input data

  echo $data

• echo Enter data

  Input data

  echo @data

• echo

  read

  echo $data

Avery is learning how to write scripts for automating tasks on her computer. She comes across a line at the beginning of her script that seems important. Which one of the statements is true for the first line argument in her script?

• First line starts with #! and this tells the compiler which interpreter to use to execute the script. and the line is #!/bin/bash

• First line starts with #! and this tells the compiler which interpreter to use to execute the script. and the line is #!/bash/bash

• First line starts with !# and this tells the compiler which interpreter to use to execute the script. and the line is #!/bin/bash

• First line starts with #! and this tells the compiler which interpreter to use to execute the script. and the line is #!/bash/bin

Grace is writing a script for her project. What should be the first line of her script?

• #!/bin/bosh

• #!/bin/bash

• !#/bin/bash

• $#/bin/bash

If you run the script as follows

./scriptName.sh Arjun Isla

What code will you be writing in your script to print these two arguments Arjun and Isla. Select correct code.

• Using %1 %2

• Using #1 #2

• echo $1 $2

• Using $0 $1

In a Unix systems class, Luna learned that you should have execute permission on a file to run the script.

• True

• False

• I don't know

• We never learned

  If you select this option. I will conduct special classes for you.

What permission should you configure after you created the script and before you run the script.

• chmod u+x scriptName.sh

• chmod +x

• chmod +wr scriptName.sh

• None of the above

The SHELL environment variable can tell you what shell program you are using on your system?

• True

• False

Oliver wants to print the numbers from 1 to 5 on the screen. Which of the following commands should he use?

• for i in {1..5}

  do

  echo $i

• for i in {1..5}

  echo $i

  done

• for i in [1..5]

  do

  echo $i

  done

• for i in {1..5}

  do

  echo $i

  done

In a classroom, Aria is organizing a group project and wants to iterate through a list of tasks. She uses the following for loop:

for i in task_list

do

execute_task

done

What is i called in the given for loop?

• loop variable

• variable

• environment variable

• special variable