bash: Basic Shell Features

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1 3 Basic Shell Features
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1 Bash is an acronym for 'Bourne-Again SHell'.  The Bourne shell is the
1 traditional Unix shell originally written by Stephen Bourne.  All of the
1 Bourne shell builtin commands are available in Bash, The rules for
1 evaluation and quoting are taken from the POSIX specification for the
1 'standard' Unix shell.
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1    This chapter briefly summarizes the shell's 'building blocks':
1 commands, control structures, shell functions, shell parameters, shell
1 expansions, redirections, which are a way to direct input and output
1 from and to named files, and how the shell executes commands.
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· Shell Syntax                What your input means to the shell.
· Shell Commands              The types of commands you can use.
· Shell Functions             Grouping commands by name.
· Shell Parameters            How the shell stores values.
· Shell Expansions            How Bash expands parameters and the various
1 				expansions available.
· Redirections                A way to control where input and output go.
· Executing Commands          What happens when you run a command.
· Shell Scripts               Executing files of shell commands.
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