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Linux Tip: Bash Parameters and Parameter Expansions

May 21, 2007, 00:00 (1 Talkback[s])
(Other stories by Ian Shields)

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"The bash shell is available on many Linux and UNIX systems today, and is a common default shell on Linux. In this tip you will learn how to handle parameters and options in your bash scripts and how to use the shell's parameter expansions to check or modify parameters. This article focuses on bash, and the examples were all run on Linux systems with bash as the shell. However, the same expansions are available in many other shells, such as ksh, ash, or dash, and you may use them with these shells on other UNIX systems or even environments such as Cygwin. This tip builds on the tools covered in the earlier tip Linux tip: Bash test and comparison functions..."

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