Task 4 Solution

Create a new user named newuser.
```
sudo useradd newuser
```
Create a new group named newgroup.
```
sudo groupadd newgroup
```
Add newuser to newgroup.
```
sudo usermod -aG newgroup newuser
```
Check the groups that newuser belongs to.
```
groups newuser
```
Create a directory named task_dir in your home directory
```
mkdir ~/task_dir
```
Change directory to task_dir and create a new file named sample.txt.
```
cd ~/task_dir
touch sample.txt
```
Change the permissions of sample.txt:
- Owner: read and write permissions
- Group: read permissions
- Others: no permissions
```
chmod 640 sample.txt    
```
OR
```
chmod o=rw,g=r,o= sample.txt
```
Change the ownership of sample.txt to newuser.
```
sudo chown newuser sample.txt
```

Change the group ownership of sample.txt to newgroup.

sudo chgrp newgroup sample.txt

OR

sudo chown :newgroup sample.txt

OR

sudo chown newuser:newgroup sample.txt

Delete the newgroup group.
```
sudo groupdel newgroup
```
Delete the newuser account and its home directory.
```
sudo userdel -r newuser
```
Update the package list on your system.
```
sudo apt update
```
Install the lolcat package.
```
sudo apt install lolcat
```
Print "I Love OSC" by piping the output to lolcat.
```
echo "I Love OSC" | lolcat
```
Remove the lolcat package.
```
sudo apt remove lolcat
```

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