How do you define and use functions in Bash? How do you pass arguments and return values?

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Functions in Bash help organize code into reusable blocks. There are two syntaxes for defining them: function greet { echo "Hello, $1" } # Or the POSIX-compatible style: greet() { echo "Hello, $1" } Arguments work just like script arguments.

How do you define and use functions in Bash? How do you pass arguments and return values?

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