You know that a lot of your posted questions or queries could be answered via simple searches here on LQ by LQ Search
or even <Linux> - Google
. Try it! If you have a problem with not understanding or need assistance then post it along with the garnered information.
Your continued posting style is starting to look a lot like trolling
I know that I have suggested that you should look at 'How to Ask Questions the Smart Way' so in the future your queries provide information that will aid us in diagnosis of the problem or queries.
Please read the linked information so that you can form useful therefore understandable posts/queries.
We are here to help you but the way you continue to post across the forum(s) causes concern.
"Knowledge is of two kinds. We Know a subject ourselves, or we know where we can find information upon it."- Samuel Johnson