3.3 Command Line - Turning Commands into a Script

Question 1

Shell scripts start with the following sequence to define the interpreter:

A) /bin/bash
B) #!
C) $#
D) !#

Answer 1

!

Question 2

Which of these is a valid for loop?

A) while [ $i -le $count ]; echo $i && count=$[$count+1]; done

B) for i in {1..10}; do echo $i; done

C) for i in one two three; echo $1

D) loop 1-10; echo $i

Answer 2

for i in {1..10}; do echo $i; done

Question 3

Which of the following sets the variable myvar equal to Apple?

A) myvar==”Apple”
B) $myvar=”Apple”
C) $myvar==”Apple”
D) myvar=”Apple”

Answer 3

myvar=”Apple”

Question 4

Which of these is a valid if statement?

A) if $i=”1”; echo $i

B) if [ $i -eq true ] echo $i; done

C) if $i = “”; echo $i; d=fi

D) if [ -n $i ]; then echo $i; fi

Answer 4

if [ -n $i ]; then echo $i; fi