Print Color Text in Command Line
Sometimes echo is not enough, if you need to print more advanced format of text. Lucky, we have printf. printf is a common function call in c programming language, if you learn c before, you should very familiar with this function.
Simply illustrate the power of printf, do as follow:
printf '\n\t\thello\tworld\n'
Besides readable character, printf can accept unreadable character too in octal value, hex value etc. That we can inject color setting to ask printf to print text in color.
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