Added random array element
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README.md
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README.md
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@ -65,6 +65,7 @@ Any donations are appreciated, they give me the time to make this the best resou
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* [Arrays](#arrays)
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* [Reverse an array.](#reverse-an-array)
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* [Remove duplicate array elements.](#remove-duplicate-array-elements)
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* [Random array element.](#random-array-element)
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* [Cycle through an array.](#cycle-through-an-array)
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* [Toggle between two values.](#toggle-between-two-values)
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* [Loops](#loops)
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@ -570,6 +571,30 @@ green
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blue
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```
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## Random array element.
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**Example Function:**
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```sh
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random_array_element() {
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# Usage: random_array_element "array"
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arr=("$@")
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printf '%s\n' "${arr[RANDOM % $#]}"
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}
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```
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**Example Usage:**
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```shell
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$ array=(red green blue yellow brown)
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$ random_array_element "${array[@]}"
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yellow
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# You can also just pass multiple arguments.
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$ random_array_element 1 2 3 4 5 6 7
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3
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```
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## Cycle through an array.
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Each time the `printf` is called, the next array element is printed. When
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