For this lab, you'll need to create a perm_demo.txt file with some text of your choice. You'll set the i and a attributes and view the results. Let's get started:

1. Using your preferred text editor, create the perm_demo.txt file with a line of text.
2. View the extended attributes of the file:

lsattr perm_demo.txt

3. Add the a attribute:

sudo chattr +a perm_demo.txt
lsattr perm_demo.txt

4. Try to overwrite and delete the file:

echo "I want to overwrite this file." > perm_demo.txt
sudo echo "I want to overwrite this file." > perm_demo.txt
rm perm_demo.txt
sudo rm perm_demo.txt

5. Now, append something to the file:

echo "I want to append this line to the end of the file." >> perm_demo.txt

6. Remove the a attribute and add the i attribute:

sudo chattr -a perm_demo.txt
lsattr perm_demo.txt
sudo chattr +i perm_demo.txt
lsattr perm_demo.txt

7. Repeat Step 4.
8. Additionally, try to change the filename and create a hard link to the file:

mv perm_demo.txt some_file.txt
sudo mv perm_demo.txt some_file.txt
ln ~/perm_demo.txt ~/some_file.txt
sudo ln ~/perm_demo.txt ~/some_file.txt

9. Now, try to create a symbolic link to the file:

ln -s ~/perm_demo.txt ~/some_file.txt

That's the end of the lab – congratulations!