Question

1. Change the permissions of the /home/shared/salesproject/ folder itself, allowing the owner and group full access, with no access for anyone else on the system.
2. Log in as "susan" (password "secret") and make sure she can access the /home/shared/salesproject/ directory and files within. Create a file in /home/shared/salesproject/ as susan. What are the owner, group, and mode of the file she created?
3. Log in as "sam" (password "secret"). Try to edit the file susan created. Why doesn't sam have access?
4. In order to guarantee that files created in /home/shared/salesproject/ are created with the "sales" group, set the SGID bit on the /home/shared/salesproject/ directory.

Need answer from 1-4

Answer 1

1).sudo chmod 770 folder_name

using this command we can Change the permissions of the /home/shared/salesproject/ folder itself, allowing the owner and group full access, with no access for anyone else on the system.

2).if we Log in as "susan" (password "secret") and we want that she can access the /home/shared/salesproject/ directory and files within for that we have to run this command

sudo chown susan folder_name

Here 'chown' command means change owner.

For Create a file in /home/shared/salesproject/ as susan we have to run this command

mkdir /home/shared/salesproject/susan

rwxr-sr-x this is the permissions of  the owner, group, and mode of the file she created

3).If we login as "sam" (password "secret"). and we want to edit then we can't edit susan file because susan file created and edited under "susan" user and all the permission of editing have assigned to user "susan"

so user "sam" is not abale to edit susan file.

4).for seting SGID permission for group we can run this command

chmod g+s folder_name