teejay4u / Aux_Project

Shell Scripting

Aux_Project

Shell Script to automate onboarding of new users on a linux server

Different codes used in the project:

1. This command locks the script to ensure only a user with sudo priviledge can run it

   if [ $(id -u) -eq 0 ]; then

2. creating a loop to read the names stored in the userfile(names.csv)

    for user in $NEW_USERS;
    do
        echo $user 
        if id "$user" &>/dev/null
         then 
         echo "user exists"else
   

3. This command will create a new user

   useradd -m -d /home/$user
   -s /bin/bash
   -g developers $user echo "New User Created"

4. This command will create a ssh and home directory for the users

   echo

   su - -c "mkdir ~/.ssh" $user echo ".ssh and home folder successfully created for new user "

5. This command will set permissions for the key_file

   echo

   su - -c "chmod 700 ~/.ssh" $user echo "directory Permission set for created user"

6. This command will create an authorized_key_file

   echo

   su - -c "touch ~/.ssh/authorized_keys" $user echo "authorized_keys directly successfully created"

7. This command will set permission for the authorized_key file

   echo

   su - -c "chmod 600 ~/.ssh/authorized_keys" $user echo "Permission set successfully for authorized_keys file"

8. This command will set public key for the users in the server

   cp -R "/root/onboard/id_rsa.pub" "/home/$user/.ssh/authorized_keys"

   echo "public key file successfully copied to user account on the server"

   echo "User Successfully Created"

9. Generating a Password for users

   sudo echo -e "teejay\nteejay" | sudo passwd "$user"

   sudo passwd -x 7 $user

   fi

        done
   

   else

   echo "only Admin can onboard a User"

   fi

10. Making Directory for Script (mkdir shell)

11. Creating CSV file in Shell directory (touch names.csv)

12. Populating csv file with random names

13. Creating developers group on server (Sudo groupadd developers)

14. Creating directory for public key & Private key and populating it with public key (mkdir id_rsa.pub id_rsa)

15. Running the script (./onboarding.sh)

16. users successfully created

17. Logged in as another user (Kunle) and verifyying .ssh folder is created including home directory