(bash.info) Basic Shell Features

 
 Basic Shell Features
 ********************
 
    Bash is an acronym for `Bourne-Again SHell'.  The Bourne shell is
 the traditional Unix shell originally written by Stephen Bourne.  All
 of the Bourne shell builtin commands are available in Bash, and the
 rules for evaluation and quoting are taken from the POSIX 1003.2
 specification for the `standard' Unix shell.
 
    This chapter briefly summarizes the shell's `building blocks':
 commands, control structures, shell functions, shell parameters, shell
 expansions, redirections, which are a way to direct input and output
 from and to named files, and how the shell executes commands.

 
* 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            Special shell variables.
* Shell Expansions            How Bash expands variables and the various
 				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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