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1. usefule tools for bash scripting usefule tools for bash scripting

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   #!/bin/bash

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   # String formatters

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   	# RGB tool allows you to enter three values on a range from 0 to 5 for red, green, and blue, which will be converted to an ANSI control sequence.

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   	# For more info, see here: https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit

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   	rgb() { printf "\033[1;38;5;$(( 16 + 36 * $1 + 6 * $2 + $3 ))m"; }