I want to update a entertain software, however I do not know how to get about the sudo command in Linux terminal, How do I get about this? is there a manual for the sudo commands for beginner that explains the different sudo commands and their interpretation? where can I get this sudo- command manual?

How can I compile apache to use previous configuration in Linux? I need upgraded to apache 2.4 from apache 2.2 and I want to keep my previous configurations such as layout, configuration option. How do I accomplish this task? Is my previous configuration is not saved, can the previous configuration be used?

Why am I getting this error: “Connecting device on port 0 fail” when I tried to install Solaris 11.2 on Supermicro 7048- CRT4 server from Live disk? At the beginning of the installation, it looks for devices after which the error: “Connecting device on port 0 fail” message appears and installation usually stale. How do I disable Port 0 in the BIOS?

Why are all the exec files in my git repos clone losing their exec bit? I have laptop running Arch Linux and I have some git repos that is clone under ~/git but the exe files in this clone usually lose their exe bit. This behavior only affects the exe files in the clone how an I fix this problem?

Why am I getting this terminal error ‘No such file or directory’ after I launch terminal? I recently shut down my system after I finish what I was doing, but when I power on the system this morning and launch terminal am getting this error. Although I have not noticed any difficulty using my system. How can I fix this problem?

With the recent revelation about Git open source development tool vulnerability identified as CVE-2014-9390, what option do I have to stop the attack from hackers? If an attack creates a malicious Git tree that cause Git to overwrite its own .git/config file when cloning, how do I restore? Is Linux OS also, open to this vulnerability?

How do I install Linux on a personal computer with Windows OS initially residing? Recently got an application design to run on Linux operating system, but I can't do without my window OS, what are the ways to create a Linux boot CD? What are the pros and cons of having Linux and Windows on a single system? How do I create Linux boot repair?

I was with some tech friends of mine and I overheard them talk of a raid system and I had no clue what they were talking about, can someone please elaborate what a raid system does and is it that expensive to develop one? What could be the estimate amount for developing such a system?

Which kernel should I use? With the recent release of the 3.13 version of the kernel, I have been thinking should I install the new one or stay with the old one that is sometimes not stable. Most of my friends have installed the new version of the kernel and some of them has seen improvement in their AMD hybrid graphic, while some complain of system crashes. Please help!

Which one of Centos, Redhat and Ubuntu should I choose to install on my computer? Why would you recommend one particular Linux operating system and not another? Have you had any particular issues using one of these operating systems and how did you manage to solve the problem? Do you know of any recurring issues with one of these systems?