Familiarisation of for permission for authentication.pdf

Abc

1. Aim:To familiarize commands which provide for authentication and
authorization.
FAMILIARISATION OF FOR
PERMISSION FOR AUTHENTICATION
AND AUTHORISATION
Exp no : 3
Date :
Theory
1. list all the users in the system
#cat /etc/passwd

2. 2. list all the groups in the system
#cat /etc/group

3. 3. find details of login users
#who

4. 4. create 5 groups
#sudo groupadd groupname

5. #sudo useradd username
5. create 6 users

6. 6. change password of all users
#sudo passwd username

7. #sudo usermod -a -G groupname username
7. assign each users to any two groups

8. 8. change primary group of any 2 users
#sudo usermod -g groupname username

9. #sudo useradd username
9. create additional 2 users

10. 10. create additional 2 groups
#sudo groupadd groupname

11. #sudo userdel username
11. remove new users

12. 12. remove new groups
#sudo groupdel groupname

13. #sudo mkdir name
13. create 5 directories in users home directory

14. 14. create 6 files in each directory
# sudo touch

15. #chmod 777 [filename]
15. grant read/write/execute permssion to 2 users on all
directories and files

16. 16. grant read/write persmision on all files of any two
directory to all users
#chmod 660 [filename]
Result : Commands are executed and output is verified.