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Practice Test 06

Updated Apr 22, 2021 ·

Lab 01 - Cron​

Tasks:

set a cronjob for user ben that run every 5 minutes.

Solution 
sudo su -
cron -u ben -e 
/5 * * * * job.sh 
:wq! 
crontab -u ben -l

Lab 02 - Hostnames​

Tasks:

Set the device hostname to phoenix.anaheim.lab.example.com.

Solution 
sudo hostnamectl set-hostname phoenix.anaheim.lab.com

Lab 03 - Repositories​

Tasks:

Configure your anaheim.example.com as yum client so that you can download and install package from your yum repository at

Solution 
cd /etc/yum/repos.d
ll

# if there are other repo, delete them.
rm -f *

# create the repo config files
touch BaseOS.repo
touch AppStream.repo

vim BaseOS.repo
[BaseOS]
name=BaseOS
baseurl=http://anaheim.example.com/rhel8.2/x86_64/dvd/BaseOS
gpgcheck=0
enabled=1

vim AppStream.repo
[AppStream]
name=AppStream
baseurl=http://anaheim.example.com/rhel7.0/x86_64/dvd/AppStream
gpgcheck=0
enabled=1

Lab 04 - File Permissions​

Tasks:

  1. Create "form.doc" and give them permission such that root have read, group have full permission and other user have write permission.
  2. Create "update.doc" and give them permission such that root have full permission, group have read and other user have read & execute permission.
Solution 
touch form.doc
chmod 472 form.doc
touch update.doc
chown root: update.doc
chmod 745 update.doc

Lab 05 - ACL​

Tasks:

  1. Copy directory /etc/fstab to /var/tmp/fstab.
  2. Assign user Michael read,write ACL permission on /var/tmp/fstab.
  3. Assign user Pete read only permission on /var/tmp/fstab.
  4. Tony has no permission, while other users have read only permission
Solution 
sudo su -
cp /etc/fstab /var/tmp/fstab
setfacl -m u:michael:rw /var/tmp/fstab
setfacl -m u:pete:r /var/tmp/fstab
setfacl -m u:tony:--- /var/tmp/fstab
setfacl -m o:r /var/tmp/fstab
getfacl /var/tmp/fstab
chmod 3770 /var/tmp/fstab

Lab 06 - Users and Groups​

Tasks:

  1. Add user Henry, John, and Will.
  2. Set "password" as password.
  3. Create a group uxdevs.
  4. Henry and John are secondary member of group of uxdevs group.
  5. Will should not have interactive shell prompt.
  6. Make a directory /mnt/reports.
  7. Group uxdevs must belong to the directory.
  8. All user in the group have read and write each other files.
Solution 
sudo su -
groupadd uxdevs
useradd -G uxdevs henry
useradd -G uxdevs john
useradd -s /sbin/nologin will
echo 'password' | passwd --stdin henry
echo 'password' | passwd --stdin john
echo 'password' | passwd --stdin will
mkdir /mnt/reports
cho.
chown uxdevx: /mnt/reports
chmod 2660 /mnt/reports

Lab 07 - Autofs​

Tasks:

Install Autofs.

Solution 
sudo su -
yum install -y autofs 
vim /etc/auto.master.d/direct.autofs 
vim /etc/auto.direct 
  /external   -rw,sync,fstpe=url
systemctl enable --now autofs
sustemctl status autofs

Lab 08 - Tar​

Tasks:

Create a tar file /tmp/root.tar.gz that compress the /root

Solution 
sudo su -
tar -czvf /tmp/root.tar.gz /root 
ll /tmp/*gz

Lab 09 - Find​

Tasks:

Find all files owned by user Thomas, and copy it to catalog: /tmp/inventory.

Solution 
ls -la /tmp/inventory
mkdir -p /tmp/inventory
find / -user 'thomas' 
find / -user 'thomas' -exec cp {} /tmp/inventory \;
ll /tmp/inventory

Lab 10 - Grep​

Tasks:

Copy all occurence of ‘strato’ from /usr/share/dict/words to the directory /tmp/data.

Solution 
grep 'strato' /usr/share/dict/words > /tmp/datbudget.xlxs 
cat /tmp/datbudget.xlxs