UNIX and LINUX SYSTEM. This involves a little bit related to processes, as well as software installation and use of tar/rsync. The tar/rsync demonstration is mainly so that you show me you understand how to use these at a relatively basic level. It's also used, in part, for the software installation part of the assignment. For the "file copying with tar/rsync", make sure you leave a log of your activity with a typescript file somewhere, and let me know where it is, or simply demonstrate it. Part I: Been already answered. solve down below: Part II: Using tar and rsync * Show me the results (logged in as your user account on regal and on your class machine logged in as root) of the following. You can either do this interactively or leave a typescript file in /root 1) In a single command, use tar to place a copy of /var/log/gdm into /home. In this case, I mean that you should create a directory called /home/gdm, which is an exact copy of /var/log/gdm, using a tar command. 2) In a single command, use rsync to place a copy of /var/log into a temporary directory in /home called /home/LogTemp That is: cd /home mkdir LogTemp (some sort of rsync command) Part III: Software installation. This part is intended for you to use several different methods of software installation: * using yum * using downloaded RPM files and then using the RPM utility * downloading compressed tar files of source code, which you have to uncompress, extract, and then compile * downloading self-installers * meta-installation of yum repositories. 1) Use rpm to install the Adobe yum repository. You'll have to find the download link for this rpm file from Adobe somewhere. (Googling of "adobe yum repository" should find a useful site.) 2) Install the flash plugin using yum. The adobe yum repository should allow you to find flash (it used to be able to find Adobe Reader but they may have stopped support). 3) In addition to the adobe repository, add the following yum repositories to your system: rpmfusion-free* rpmfusion-nonfree* These can be found through prudent google search. The version of CentOS you are using is 6.9 - i.e. it's a version of CentOS 6. Sometimes the sites will have relatively generic languages such as "RHEL 6 or compatible like CentOS" - meaning essentially CentOS 6. 4) Using yum, verify whether you have the following installed. If not, then use yum and/or RPM to install them. If so, simply show (using a typescript). telnet, ftp (server), apache web server, anything related to NFS, Samba, finger, xinetd, yydecode. Some of these will be defined as "X" and "X-server" (for example, telnet and telnet-server) 5) Create an 'ns' account with its own group, and download/install a version of the ns-2 simulator (into that account). Typing ns-2 in google search should lead you to the ns-2 site. It is necessary that you build this software according to their instructions. This means: a) instead of their tcl/tk, use yum to ensure these are installed. That may include both tcl and tcl-devel, as well as tk and tk-devel. b) Install it otherwise in the order listed: (yum install tk/tcl as stated in (a) then otcl then tclcl then ns-2 NOTE - building software from the downloadable source requires root permission to install. This means that "as ns", you build it. Then su to root to install it. Additional NOTE - you will likely run into a few problems with this whereby certain portions of the software won't install without your making some modifications to Makefiles and source code. This is a problem-solving bit here, but this portion is worth only a half point. I'll try to give hints... First: you may need to install libXt-devel - i.e.: yum install libXt-devel Second: make sure gcc and gcc-c++ are installed: yum install gcc yum install gcc-c++ Third: The process of running "./configure" for otcl causes it to create a Makefile. You may need to edit that file, looking for "NONE" - a hint as to it installing one of the compiled libraries incorrectly. ---------- Typical process looks something like this, at some point during the install: make configure <-- makes config files, makefiles, etc. Can be done as ns make <-- Builds the software. Can be done as ns make install <-- tries to install in /usr/bin etc. MUST be done as root 6) Demonstrate using rpm to install unrar-3.9.10-3 or greater. 7) Download and install teamviewer. I'll discuss... 

To answer please write all commands from the scratch.