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shell variables

Linux / Unix: Bash Shell See All Exported Variables and Functions

How do I see a list of all exported variables and functions under Unix bash shell?
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Bash: Assign Output of Shell Command To Variable

How do I assign the output of a shell command to a shell variable under Unix like operating system? For example, I want to store the date command output to a variable called $now. How do you do that?
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Use export Command in Linux / Unix

How do I use export command under a Linux or Unix-like operating systems to set variables on a bash shell?
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Bash: Pass Shell Variables To awk

How do I pass shell variables to awk command or script under UNIX like operating systems?
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Linux: Set Environment Variable

Bash shell is used for various purposes under Linux. How do I customize the shell environment variable under Linux operating systems?
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HowTo: Use Oracle / MySQL SQL Commands In UNIX Shell Scripts

How do I call Oracle or MySQL sql statements in UNIX / Linux shell scripts?
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Bash Shell Loop Over Set of Files

How do I run shell loop over set of files stored in a current directory or specified directory?
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Why and How To Customize a UNIX / Linux User Account?

Q. Can you tell more about UNIX user account customization along with some sample configuration?
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Korn Shell Variables

What is a shell variables? How do I define and use a variable under korn shell?
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