Add users a) Add a user named roger (or, create your own username) using the useradd command. useradd -d /home/roger -m roger b) Create a password for the new user using the passwd command passwd roger c) Login using the new account. d) Repeat step a) to c) to create 2 or 3 other users. e) Examine the home directory of each user under /home/. f) Examine the following files and see whats added for the users/groups you created. Try to understand the new additions. i) /etc/passwd ii) /etc/shadow iii) /etc/group g) Create two groups: managers, staff h) Add roger to the managers group; add other users you have created to the staff group. i) Create some files and directories in /etc/skel. j) Create a new user and then login to examine his/her home directory. What has been created already in the home directory? k) Add Roger to a new group called committee. l) Use the id or groups command to check users and groups information and see if they are in the right groups. id roger 2) Create a new user with following information. Try to use fewer commands to complete the task. a) User name: bbrown b) Primary group: faculty c) Other groups: web-author, coordinator d) Temporary password: bob (the user needs to change it when login for the first time) e) How many commands did you use? f) Take two screenshots i) Execute id bbrown on the command line. Take a screenshot of the execution results (#7-1). ii) Display the content of the passwd file. Show the line for the user bbrown. Take a screenshot (#7-2