System resource monitoring (free, uptime, vmstat) in Linux CLI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to display the total and free memory on the system.

Linux CLI

free [1]

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

A-m

B-x

C-z

D-q

Attempts:

3 left

💡 Hint

Common Mistakes

Using options that do not display memory in a readable format.

Omitting the option and getting output in bytes.

The -m option shows memory in megabytes, making it easier to read total and free memory.

2fill in blank

medium

Complete the code to show how long the system has been running.

Linux CLI

uptime [1]

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

A-p

B-t

C-s

D-v

Attempts:

3 left

💡 Hint

Common Mistakes

Using uptime without options which shows more info than needed.

Using -s which shows boot time, not uptime duration.

The -p option shows the uptime in a pretty, human-readable format.

3fill in blank

hard

Fix the error in the command to display CPU and memory statistics every 2 seconds.

Linux CLI

vmstat [1] 5

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

A-s

B-2

C2

Ds

Attempts:

3 left

💡 Hint

Common Mistakes

Using a dash before the interval number causes an error.

Using letters instead of numbers for interval.

To display stats every 2 seconds, provide the interval as the first argument without a dash.

4fill in blank

hard

Fill both blanks to create a command that shows memory usage in kilobytes and updates every 3 seconds.

Linux CLI

free [1] [2] 3

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

A-k

B-m

C-s

D-h

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up units and interval options.

Using -m instead of -k for kilobytes.

-k shows memory in kilobytes, and -s followed by a number sets the update interval in seconds.

5fill in blank

hard

Fill all three blanks to create a vmstat command that shows statistics every 4 seconds, 6 times, and displays summary since boot.

Linux CLI

vmstat [1] [2] [3]

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

A4

B6

C-s

D-m

Attempts:

3 left

💡 Hint

Common Mistakes

Using options instead of numbers for interval and count.

Omitting the summary option.

The first two numbers set the interval and count, and -s shows a summary of memory stats since boot.