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1. In Unix, a shell builtin is a command or a function, called from a shell, that is executed directly in the shell itself, instead of an external executable program which the shell would load and execute. Shell builtins work significantly faster than external programs, because there is no program loading overhead. However, their code is inherently present in the shell, and thus modifying or updating them requires modifications to the shell. Therefore shell builtins are usually used for simple, almost trivial, functions, such as text output. Because of the nature of Unix, some functions of the operating system have to be implemented as shell builtins. The most notable example is cd, which changes the working directory of the shell. Because each executable program runs in a separate process, and working directories are specific to each process, loading cd as an external program would not affect the working directory of the shell that loaded it. Examples: A widely used shell-builtin is the logout function, which terminates the session. This function has different names depending on the shell. Some examples from bash include $ cd .. Loops (if, while, for and such) $ echo. man bash-builtin will list a few on most UNIX-systems. (Wikipedia)

2. Which of course should have never been made. One should always create relative path settings.

A DNS server resolves domain names into IP addresses. So when you request “google.com” for example, the DNS server finds out the address for the domain, and sends your request the right way.

You can run a DNS cache on your computer. This will speed up the process of looking up domain names when browsing. The difference is about 30-60 ms for me. Multiply that difference by the number of websites you visit a day for an approximate estimate of the speed improvement. Of course, all this would be worth it if it weren’t for the fact that setting this up is way too easy.

The following instructions are for someone with a cable (broadband) internet connection, where the computer gets it’s local IP address using DHCP from the router in your house/office:

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Hi,People uses internet for getting good information through different websites available on web in Web Design Cochin. So the website should be clean, simple and well-structured which gives good information. It should be mainly featured by good informative content, simple layout, easy navigation, and the graphics used should be loaded easily and fast.Thanks....

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