Use the echo command in shell to output color text

First, familiarize yourself with the echo command

Name
Echo-display a line of text

Summary
Echo [Option]... [String]...

Description
Outputs a string to the standard output.

-N does not output line breaks

-E open the backslash (ESC) Escape

-E cancel the backslash ESC escape (default)

-- Help: Display help

-- Display version

That's all.
Note that the-e option is required for the output color.

Next, let's focus on the application of the ANSI control code in the output of color text.

-E is used to enable escape in Echo.
/E or/033 to output the ESC symbol
Set the color format:/E [background color; foreground color; Highlight m
Restore the default value:/E [0 m
The background color can be replaced by the following numbers:
0 transparent (Use Terminal color), 40 black, 41 red, 42 green, 43 yellow, 44 Blue 45 purple, 46 green, 47 white (Gray)

The foreground color (the color of the text) can be replaced by the following numbers.
30 Black 31 red, 32 green, 33 yellow, 34 blue, 35 purple, 36 green, 37 white (Gray)

Highlight is 1, not 0
Note that M follows the string.

For example
Lonelycorn @ untbook :~ $ Echo-e '/033 [0; 33; 1 mabc/033 [0m'
Output
ABC

Then we will give several powerful script Functions
1 cfont
# By zuoyang http://hi.baidu.com/test/
Cfont ()
{
While ($ #! = 0 ))
Do
Case $1 in
-B)
Echo-ne "";
;;
-T)
Echo-ne "/t ";
;;
-N) echo-ne "/N ";
;;
-Black)
Echo-ne "/033 [30 m ";
;;
-Red)
Echo-ne "/033 [31 m ";
;;
-Green)
Echo-ne "/033 [32 m ";
;;
-Yellow)
Echo-ne "/033 [33 m ";
;;
-Blue)
Echo-ne "/033 [34 m ";
;;
-Purple)
Echo-ne "/033 [35 m ";
;;
-Cyan)
Echo-ne "/033 [36 m ";
;;
-White |-gray) echo-ne "/033 [37 m ";
;;
-Reset)
Echo-ne "/033 [0 m ";
;;
-H |-help | -- Help)
Echo "Usage: cfont-color1 message1-color2 message2 ...";
Echo "eg: cfont-red [-blue message1 message2-red]";
;;
*)
Echo-ne "$1"
;;
Esac
Shift
Done
}
The usage is as follows:
Cfont-color string...
For example:
Cfont-cyan ABC
Note that the-n option must be added for line breaks during use. To restore the default value, add the-reset option.

2 color code table
#! /Bin/bash
T = 'gyw' # The test text

Echo
Echo "Default 40 M 41 m 42 m 43 m 44 m 45 m 46 m
47 M"
# FGS indicates the foreground color and BG indicates the background color.
For FGS in 'M' '1m' '30m' 1; 30m' '31m' 1; 31m' '32m' 1; 32m''
33m'' 1; 33m'' 34m'' 1; 34m'' 35m'' 1; 35m'' 36m'' 1; 36m'' 37m'' 1; 37m'
Do
Fg = $ (echo $ FGS | tr-D '')
Echo-en "$ FGS/033 [$ FG $ t"
For BG in 40 M 41 m 42 m 43 m 44 m 45 m 46 m 47 m;
Do
Echo-en "/033 [$ fg/033 [$ BG $ t/033 [0 m"
Done
Echo
Done
Echo

No, that's it.