Linux Online Test

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.

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?

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.

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.

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 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?