Bash Array Quiz

How do you declare an array in Bash?

• array_name = (value1 value2 value3)

• array_name = [value1 value2 value3]

• array_name = {value1 value2 value3}

• array_name =

What is the correct way to access the third element of an array named my_array?

• ${my_array[2]}

• ${my_array[3]}

• ${my_array[1]}

• ${my_array[0]}

Which command is used to get the length of an array in Bash?

• ${#array_name}

• ${array_name[@]}

• ${#array_name[@]}

• ${array_name[*]}

How do you append a value to an existing array in Bash?

• array_name += value

• array_name[] = value

• array_name += (value)

• array_name+=(value)

What is the output of the following code? array=(1 2 3 4 5) echo ${array[@]:1:3}

• 1 2 3

• 2 3 4

• 3 4 5

• 2 3 4 5

How do you iterate over all elements of an array named my_array?

• for i in ${my_array[*]}; do echo $i; done

• for i in ${my_array[@]}; do echo $i; done

• for i in ${my_array}; do echo $i; done

• for i in ${my_array[0]}; do echo $i; done

Which of the following is the correct way to declare an associative array in Bash?

• declare -A array_name

• declare -a array_name

• declare -A array_name[]

• declare -a array_name[]

How do you remove an element from an array in Bash?

• unset array_name[index]

• remove array_name[index]

• delete array_name[index]

• unset array_name[index] = value

What does the following code do? array=(a b c d e) echo ${array[@]//a/A}

• Replaces all elements with ‘A’

• Replaces ‘a’ with ‘A’ in all elements

• Replaces the first element with ‘A’

• Replaces ‘a’ with ‘A’ in the first element

How do you print all elements of an array named my_array?

• echo ${my_array}

• echo ${my_array[*]}

• echo ${my_array[@]}

• Both B and C