Linux Online Test

The weather.sh utility in the current working directory provides weather forecasts in your area.

When called, it outputs a 4-day forecast in the format "day: weather" separated by line breaks.

Write a bash script that outputs the number of days with a "Thunderstorm" forecast (case-sensitive).

See the example case for more details.

You are the sysadmin of a Linux server that uses local passwords for authentication.

Two members of the team were assigned to work on the server: Ashley, who needs to change her username, and Peter, who already has a user account but forgot his password.

What steps should you do so Ashley and Peter are able to login to the server using their new credentials?

You ran a script that wrongly put its output image files in the 'work' directory inside the current directory.

Create a bash script that removes all the files in the 'work' directory that start with either 'out_0' or 'out_1' and end with '.png'.

For example, if the 'work' directory contains the following files: 

After running your script, both out.png and out_0.pdf should exist in the 'work' directory but out_0a.png and out_1.png should no longer exist.

See the example case for more details.

Select the statements about the output of the following script that are correct.

#!/bin/bash
value=$1
if [ $value -eq 100 ]
then
    echo "value is eq 100"
elif [ $value -gt 100 ]
then
    echo "value is gt 100"
else
    case $value in
    [1-3]*) echo "value is between 1 and 39 (inclusive)" ;;
    [4-5]*) echo "value is between 40 and 59 (inclusive)" ;;
    9[1-8]) echo "value is between 91 and 98 (inclusive)" ;;
    99) echo "value is $value" ;;
    *) echo "value is unknown" ;;
    esac
fi

The PATH variable is set in /etc/environment: 

PATH="/usr/local/sbin:/usr/local/bin:/usr/games:/usr/local/games"

And updated in .bash_profile:

export PATH=/usr/temp:$PATH:/usr/local/apps

Select the statements are correct.

The output of crontab -l contains the following job definitions:

MAILTO=candidate@testdome.org,admin@testdome.org
0 0,12 1 */4 * df -h /

@hourly du -h / >> /var/log/disk_usage

0 6 1-12 * * /usr/bin/testdome_candidates

Select the statements about the job definitions and schedules that are correct.

Your company has a Linux computer with a directory named debug_programs intended for developers only.

The following needs to be done:

• debug_programs should only be accessible to users in the developers group.
• Alex should be removed from the developers group because he left the company.
• Confirm that the new developers Cynthia, Emma, and Justin belong to the developers group.

What should be done to satisfy the requirements above?