Progress indicators in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print a dot as a progress indicator every second.

Bash Scripting

while true; do echo -n [1]; sleep 1; done

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

A"#"

B"-"

C"*"

D"."

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the -n option causes newlines instead of a progress line.

Using quotes incorrectly can cause syntax errors.

The code prints a dot (.) without a newline every second to show progress.

2fill in blank

medium

Complete the code to show a spinning progress indicator using characters |, /, -, and \.

Bash Scripting

spin='|/-\\'; while true; do for i in $(seq 0 3); do echo -ne "\r${spin:[1]:1}"; sleep 0.2; done; done

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

Ai

B0

Ci+1

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using i+1 is invalid syntax inside ${} in bash.

Using a fixed number like 0 or 1 will not animate the spinner.

The code uses variable i as the index to get one character from spin string.

3fill in blank

hard

Fix the error in the code to update a progress bar with hashes (#) and dots (.) correctly.

Bash Scripting

total=10; for ((i=1; i<=total; i++)); do done_part=$(printf '#%.0s' $(seq 1 [1])); left_part=$(printf '.%.0s' $(seq 1 $((total - i)))); echo -ne "[${done_part}${left_part}]\r"; sleep 0.5; done; echo

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

A1

Btotal

Ci

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using total prints full hashes every time, no progress effect.

Using 0 or 1 prints wrong number of hashes.

The done_part should print i hashes to show progress, so use i as the count.

4fill in blank

hard

Fill both blanks to create a progress bar that updates with hashes (#) and dots (.) inside brackets.

Bash Scripting

total=20; for ((i=1; i<=total; i++)); do done_part=$(printf '[1]%.0s' $(seq 1 [2])); left_part=$(printf '.%.0s' $(seq 1 $((total - i)))); echo -ne "[${done_part}${left_part}]\r"; sleep 0.3; done; echo

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

A#

B.

Ci

Dtotal

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the character and count causes wrong output.

Using total instead of i prints full bar every time.

The done_part prints i hashes (#) to show progress, so blanks are '#' and 'i'.

5fill in blank

hard

Fill all three blanks to create a progress bar dictionary in bash using associative arrays, showing keys as steps and values as hashes count.

Bash Scripting

declare -A progress; total=5; for ((i=1; i<=total; i++)); do progress[$ [1] ]=$(printf '[2]%.0s' $(seq 1 [3])); done; for step in "${!progress[@]}"; do echo "$step: ${progress[$step]}"; done

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

Ai

B#

Dtotal

Attempts:

3 left

💡 Hint

Common Mistakes

Using total as count prints full hashes for all keys.

Using dots (.) instead of hashes (#) changes the progress style.

The keys are i, the value is i hashes (#), so blanks are i, #, i.