Shell (6) color.doc

Shell
Color in

 

1)



Concept

ANSI
Escape code to control the display format

To
CSI
(
Control sequence indicator
).

Select graphic
Rendition
, Select image reproduction

 

2)



Csin [; k] m

N/K
Define the selected display control,
M
Table
SGR
Escape code

N/K
Definition:

0
Normal mode,
1
High Brightness,
2
Brightness,
3
Italic,
4
Single underline,
5
Slow,
6
Flash,
7
Foreground background inversion,
8
Foreground is set as background to make text invisible

For example, the Italic code is"
Csi3m
"
,
"
Csi3; 6 m
"Blinking in Italic

 

3)



Color Control Code:

Use double digits
[34] x
,
3
Table foreground,
4
Table background

0
Black,
1
Red,
2
Green,
3
Huang,
4
Blue,
5
Yanghong,
6
Qing,
7
White

For example, the red italic is
Csi31; 3 m

 

Set
ANSI
The escape code is sent to the terminal simulator to control the output of the terminal;

Use
Echo
(Or
Cat
) Send the escape code to the terminal;

Input
ANSI
Escape code:
CTRL-V
, Plus
ESC
, Which will be displayed as"
^ [
"

Eg:

Echo
^ [[41 m this is a test ^ [0 m

Previous
^ [[
Used for setting, the last one
^ [[
Used to restore to default,

Echo
If there are multiple escape codes, double quotation marks are required.
Csi33; 44 m
Hour:

Echo "^ [33; 44mabc ^ [0 m"

 

4)



Note:

The terminal simulator will process the control code as long as it encounters it.
Cat
Browsing scripts with escape codes also affects Terminal display.