Parallel execution patterns in Bash Scripting - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to run two commands in parallel.

Bash Scripting

command1 & [1]

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

Acommand2 &

Bcommand2

Cwait

Dsleep 1

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting & after the second command runs it sequentially.

Using wait here pauses the script instead of running in parallel.

Adding & after command2 runs it in the background, so both commands run in parallel.

2fill in blank

medium

Complete the code to wait for all background jobs to finish.

Bash Scripting

command1 &
command2 &
[1]

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

Ajobs

Bfg

Cwait

Dkill

Attempts:

3 left

💡 Hint

Common Mistakes

Using jobs only lists jobs but does not wait.

Using fg brings a job to foreground but does not wait for all.

The wait command pauses the script until all background jobs finish.

3fill in blank

hard

Fix the error in the code to run commands in parallel and wait for them.

Bash Scripting

command1 &
command2 [1]

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

Ajobs

Bwait

Cfg

Dkill

Attempts:

3 left

💡 Hint

Common Mistakes

Not adding & after the second command runs it sequentially.

Using jobs or fg instead of wait.

The second command needs & to run in background for parallel execution. Then wait waits for all.

4fill in blank

hard

Fill both blanks to run commands in parallel and wait for them.

Bash Scripting

command1 [1]
command2 [2]
wait

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

A&

B;

C&&

D|

Attempts:

3 left

💡 Hint

Common Mistakes

Using ; or && runs commands sequentially.

Using | pipes output but does not run in background.

Adding & after both commands runs them in background. Then wait pauses until both finish.

5fill in blank

hard

Fill all three blanks to run commands in parallel, wait, and then print done.

Bash Scripting

command1 [1]
command2 [2]
[3]
echo "All done"

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

A&

Bwait

C;

D&&

Attempts:

3 left

💡 Hint

Common Mistakes

Not using & causes sequential execution.

Not using wait may print message too early.

Use & to run commands in background, then wait to pause until they finish, then print the message.