How to realize Coloring output by Linux

This article mainly introduces Linux how to achieve color output, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Problem description

In the terminal, we often look at the log output (whether it's our own Shell script or running other programs) to see how the program is executing.

However, all terminal logs are the same color (usually the default is white font)

Solution 1. ANSI escape code-the oldest method

Using ANSI escape code is the oldest method:

# echo-e "\ 033 [31 countries 1 countries 4mHello\ 033 [0m" Hello

This command outputs an underlined red Hello string

Method 2. Grc# grc tail-f / var/log/syslog

This command highlights the syslog log output, giving you more control through the configuration file

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