Adding and removing elements in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add an element to the end of a bash array.

Bash Scripting

my_array=(apple banana cherry)
my_array+=([1])

Drag options to blanks, or click blank then click option'

A"egg"

B"fig"

C"date"

D"grape"

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to quote the element.

Using '=' instead of '+=' which replaces the array.

The '+=' operator adds the new element to the end of the array. Here, "egg" is added.

2fill in blank

medium

Complete the code to remove the second element from a bash array.

Bash Scripting

my_array=(apple banana cherry date)
unset my_array[[1]]

Drag options to blanks, or click blank then click option'

A1

B3

C0

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using 2 instead of 1 for the second element index.

Trying to remove element by value instead of index.

Array indexes start at 0, so the second element is at index 1. Using 'unset' removes it.

3fill in blank

hard

Fix the error in the code to correctly add an element to the array.

Bash Scripting

my_array=(apple banana cherry)
my_array=[1] "date"

Drag options to blanks, or click blank then click option'

Aappend

B=

C+=

Dadd

Attempts:

3 left

💡 Hint

Common Mistakes

Using '=' which replaces the entire array.

Using non-existent commands like 'append' or 'add'.

The '+=' operator appends elements to the array. '=' replaces the array, and 'append' or 'add' are invalid in bash.

4fill in blank

hard

Fill both blanks to create an array and then remove the last element.

Bash Scripting

my_array=([1])
unset my_array[[2]]

Drag options to blanks, or click blank then click option'

A"apple" "banana" "cherry"

B2

C3

D"date" "fig"

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong indexes to remove elements.

Incorrectly formatting the array elements.

The array is created with three elements indexed 0,1,2. The last element is at index 2, so unset removes it.

5fill in blank

hard

Fill all three blanks to add two elements and then remove the first element from the array.

Bash Scripting

my_array=(apple)
my_array+=([1])
my_array+=([2])
unset my_array[[3]]

Drag options to blanks, or click blank then click option'

A"banana"

B"cherry"

C0

D"date"

Attempts:

3 left

💡 Hint

Common Mistakes

Removing the wrong index.

Trying to add multiple elements in one '+=' without quotes.

We add "banana" and "cherry" to the array, then remove the first element at index 0.