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>3.7. Summary</H1
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>The Bash environment can be configured globally and on a per user basis. Various configuration files are used to fine-tune the behavior of the shell.</P
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>These files contain shell options, settings for variables, function definitions and various other building blocks for creating ourselves a cosy environment.</P
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>Except for the reserved Bourne shell, Bash and special parameters, variable names can be chosen more or less freely.</P
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>Because a lot of characters have double or even triple meanings, depending on the environment, Bash uses a system of quoting to take away special meaning from one or multiple characters when special treatment is not wanted.</P
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>Bash uses various methods of expanding command line entries in order to determine which commands to execute.</P
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