Scheduled data collection with cron in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to schedule a script to run every minute using cron syntax.

Raspberry Pi

* * * * [1] /home/pi/data_collect.sh

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

A*

B1

C0

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using a number instead of * causes the job to run only on that specific day.

The asterisk (*) means 'every' in cron syntax. Here, the last asterisk means every day of the week.

2fill in blank

medium

Complete the cron schedule to run a script every hour at minute 30.

Raspberry Pi

30 [1] * * * /home/pi/data_collect.sh

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

A0

B1

C*

D30

Attempts:

3 left

💡 Hint

Common Mistakes

Putting 30 in the hour field causes the script to run only at 30:00 which is invalid.

The asterisk (*) in the hour field means every hour. So the script runs at minute 30 of every hour.

3fill in blank

hard

Fix the error in the cron command to run a script every day at 6 AM.

Raspberry Pi

[1] 6 * * * /home/pi/data_collect.sh

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

A6

B30

C*

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Setting minutes to 6 causes the script to run at 6 minutes past every hour.

The first field is minutes. To run at 6:00 AM, minutes should be 0 and hour 6.

4fill in blank

hard

Fill both blanks to schedule a script to run every Monday at 7 AM.

Raspberry Pi

0 [1] * * [2] /home/pi/data_collect.sh

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

A7

B1

C0

D6

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0 for day of week runs on Sunday, not Monday.

The hour is 7 for 7 AM, and 1 in the day-of-week field means Monday.

5fill in blank

hard

Fill all three blanks to schedule a script to run at 5:15 PM on the 10th day of every month.

Raspberry Pi

[1] [2] [3] * * /home/pi/data_collect.sh

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

A15

B17

C10

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using 5 for hour runs at 5 AM, not 5 PM.

Minute is 15, hour is 17 (5 PM in 24-hour format), and day of month is 10.