Sure, there are a few ways to change the output color of echo in Linux. Here are two methods:

Method 1: Using the ANSI escape codes

The ANSI escape codes are a set of codes that can be used to control the appearance of text on a terminal. To change the output color of echo using ANSI escape codes, you can use the following syntax:

echo -e "<escape_code> <text>"

For example, to change the output color of echo to red, you would use the following code:

echo -e "\033[31mHello, world!\033[0m"

The \033[31m escape code tells the terminal to set the text color to red.

The \033[0m escape code tells the terminal to reset the text color to the default.

Method 2: Using the colorama module

The colorama module is a Python module that can be used to add color to text in the terminal. To change the output color of echo using the colorama module, you can use the following code:

import colorama

colorama.init()

print(colorama.Fore.RED + "Hello, world!" + colorama.Fore.RESET)

The colorama.Fore module provides a number of constants that can be used to set the text color.

The colorama.init() function initializes the colorama module.