Login to the server as super user and perform below

1. Create users and set passwords – user1, user2, user3

sudo useradd user1 sudo useradd user2 sudo useradd user3

sudo passwd user1 sudo passwd user2 sudo passwd user3

Create Groups – devops, aws

sudo groupadd devops sudo groupadd aws

Change primary group of user2, user3 to ‘devops’ group

sudo usermod -g devops user2 sudo usermod -g devops user3

Add ‘aws’ group as secondary group to the ‘user1’

sudo usermod -a -G aws user1

Create the file and directory structure shown in the above diagram.

sudo su -

mkdir home dir1 dir2 dir3 dir3 dir4 dir5 dir6 dir7 dir8 opt

touch f1.txt f2.txt

mkdir dir2/dir1

mkdir dir2/dir1/dir2/

mkdir dir2/dir1/dir2/dir10

mkdir dir2/dir1/dir2/f3.txt

mkdir dir3/dir11

mkdir dir4/dir12

touch dir4/dir12/f4.txt

touch dir4/dir12/f5.txt

mkdir dir5/dir13

mkdir dir7/dir10

touch dir7/f3.txt

mkdir dir8/dir9

mkdir opt/dir14

mkdir opt/dir14/dir10

touch opt/dir14/f3.txt

Change group of /dir1, /dir7/dir10, /f2 to “devops” group

chgrp devops dir1 chgrp devops dir7/dir10 chgrp devops f2.txt

Change ownership of /dir1, /dir7/dir10, /f2 to “user1” user.

chown user1 dir1 dir7/dir10 f2.txt

2.Login as user1 and perform below

Create users and set passwords – user4, user5

sudo vi /etc/sudoers su - user1

sudo useradd user4 sudo useradd user5

sudo passwd user4 sudo passwd user5

Create Groups – app, database

sudo groupadd app sudo groupadd database

Login as ‘user4’ and perform below

Create directory – /dir6/dir4

mkdir dir6 mkdir dir6/dir4

Create file – /f3

touch f3.txt

Move the file from “/dir1/f1” to “/dir2/dir1/dir2”

mv -i dir1/f1.txt dir2/dir1/dir2

Rename the file ‘/f2′ to /f4’

mv f2.txt f4.txt

Login as ‘user1’ and perform below

Create directory – “/home/user2/dir1”

sudo mkdir /home/user2/dir1

Change to “/dir2/dir1/dir2/dir10” directory and create file “/opt/dir14/dir10/f1” using relative path method.

cd /dir2/dir1/dir2/dir10

touch opt/dir14/dir10/f1.txt

Move the file from “/opt/dir14/dir10/f1” to user1 home directory

mv root/opt/dir14/dir10/f1.txt /home/user1

Delete the directory recursively “/dir4”

[root@ip-172-31-6-26 ~]# rm -r dir4 rm: descend into directory 'dir4'? yes rm: descend into directory 'dir4/dir12'? yes rm: remove regular empty file 'dir4/dir12/f4.txt'? yes rm: remove regular empty file 'dir4/dir12/f5.txt'? yes rm: remove directory 'dir4/dir12'? yes rm: remove directory 'dir4'? yes

Delete all child files and directories under “/opt/dir14” using single command.

[root@ip-172-31-6-26 ~]# rm -r opt/dir14 rm: descend into directory 'opt/dir14'? yes rm: remove directory 'opt/dir14/dir10'? yes rm: remove regular empty file 'opt/dir14/f3.txt'? yes rm: remove directory 'opt/dir14'? no [root@ip-172-31-6-26 ~]# ls

Write this text “Linux assessment for an DevOps Engineer!! Learn with Fun!!” to the /f3 file and save it.

echo "Linux assessment for an Devops Engineer!! Learn with Fun!! " > dir2/dir1/dir2/f3.txt

Login as ‘user2’ and perform below Create file “/dir1/f2”

Delete /dir6

rmdir dir6

Delete /dir8

[root@ip-172-31-6-26 ~]# rm -r dir8 rm: descend into directory 'dir8'? yes rm: remove directory 'dir8/dir9'? yes rm: remove directory 'dir8'? yes

Replace the “DevOps” text to “devops” in the /f3 file without using editor.

Using Vi-Editor copy the line1 and paste 10 times in the file /f3.

Search for the pattern “Engineer” and replace with “engineer” in the file /f3 using single command.

Delete /f3

Login as ‘root’ user and perform below

Search for the file name ‘f3’ in the server and list all absolute paths where f3 file is found.

Show the count of the number of files in the directory ‘/’

Print last line of the file ‘/etc/passwd’

Login to AWS and create 5GB EBS volume in the same AZ of the EC2 instance and attach EBS volume to the Instance.

Login as ‘root’user and perform below

Create File System on the new EBS volume attached in the previous step

Mount the File System on /data directory

Verify File System utilization using ‘df -h’ command – This command must show /data file system

Create file ‘f1’ in the /data file system.

Login as ‘user5’ and perform below

Delete /dir1

Delete /dir2

Delete /dir3

Delete /dir5

Delete /dir7

Delete /f1 & /f4

Delete /opt/dir14

Logins as ‘root’ user and perform below

Delete users – ‘user1, user2, user3, user4, user5’

Delete groups – app, aws, database, devops

Delete home directories of all users ‘user1, user2, user3, user4, user5’ if any exists still.

Unmount /data file system

Delete /data directory

Login to AWS and detach EBS volume to the EC2 Instance and delete the volume and then terminate EC2 instance.