$1.$Your name is Jane. Create a repository for your project named $$Linux$.$ The folder is created outside thehome directory of Jane. It is a group project and your friend Tom also has to have access to this repository.Things to be noted:$$You create a user Tom with short description and password and a home directory.$$Let Tom modify his shell and password.$$Tom shouldn$$t be able to access your home folder.$$Create another folder named $$notes$$ where you keep your study notes and Tom and may beother friends can also have same access to it$.$ Guest shouldn$$t be able to modify anything.$$Create another folder named $$research$$ where you keep the list of your researches. Others canhave a look at list of researches in it but no one should be able to read, write it$.$Approach to solve:$$Start with creating a new user Tom$$Create two groups.$$Add yourself and tom in one group. The other group can be for your set of friends.$$Put proper permissions for the groups and folders.$2.$Tom$$s laptop has CentOS Linux and Jane$$s laptop has Ubuntu Linux. Once they found few software packages useful to install.$$Jane wants to upgrade the version of python to python$3.$ Check and upgrade the python version.$$Jane and Tom want mysql to be installed on their system.$$Remove python for Tom as he won$$t be using it$.$Install java with tar.gz available. Please guide them, how to build them using simple commands like $(1)./$configure $(2)$ make and $(3)$ make install.$$Support them to resolve dependency on other software modules, installing as super user and normal user, possible file permission issues and running few applications immediately after boot process.$$

Approach to solve:$$Let Jane check the python version if installed. If it is not installed, install python$3.$ If installed and python$2$ present then remove it and then install python$3.$Check if mysql is installed in either system. If not present, then install it$.$Checkif python is present in Tom$$s system. If present remove it$.$Make sure to have sudo access or elevate the permission for the user.$$Resolve dependencies if any.$$Untar java.gz and install it$.$Provide executable permission to it$.$Let java start immediately after boot.$3.$Networking:Tina brought her own laptop.$$Please help them to build a private network between her and Tom$$s laptops.$$Sometime$,$ Tom and Tina like to work on each other$$s system from their own laptop. Please guide them about remote log$-$in$.$ Please explain them about pros and cons of SSH and Telnet.$$Sometimes they want to share their files with each other over network. Please provide themvarious alternatives like FTP$,$ TFTP$,$ SCP and SFTP etc with their relative advantages$$They noticed that none of the alternatives worked for them. Please introduce them aboutvarious troubleshooting tools at Linux. It can be$,$ wireshark, tcpdump, netstat command etc.$$Also explain them, the relevance and importance of opening of a specific port at firewall to run any server.$$Now they got Internet connectivity and they are about to connect both laptop to Internet.Explain them about possible DoS attack $($and its remedy$)$ if any port is open in the system.$$Approach to solve:$$Connect Tom and Tina by lan cable or by wireless.$$Run command $$ifconfig$$ to find if they are in same subnet.$$Try ping to other machines.$$If ping is successful then a connection is established.$$Let the communicate via ftp$,$ scp $,$ ssh$,$ etc.