A shell variable is a variable that is available only to the current shell. In contrast, an environment variable is available system wide and can be used by other applications on the system.A shell is the operating system's command interpreter. It processes the commands entered on the command line or read from a shell script file.
Although the 802.11ac standard is still a few years away from implementation, the time to start thinking about whether to focus on Ethernet or go wireless is now.
Brad Casey has a background in writing technical documents, but is branching out into the article/blogging format. He loves all things related to information technology, and has an unquenchable passion for writing. Full Bio
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