ANSI escape sequences

ANSI escape sequences
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Topics

Syntax
Usage
See also

Syntax

In this table, Esc refers to the 0x1B escape character.

Escape sequence Meaning

Esc [ row; col H

Set cursor position, counting from (1, 1) in the upper left-hand corner.

Esc [ row; col f

Set cursor position, counting from (1, 1) in the upper left-hand corner.

Esc [ n A

Cursor up n rows.

Esc [ n B

Cursor down n rows.

Esc [ n C

Cursor forward n rows.

Esc [ n D

Cursor backward n rows.

Esc [ s

Save cursor position.

Esc [ u

Restore cursor position.

Esc [ 2 J

Erase display and move cursor to upper left-hand corner.

Esc [ K

Erase to end of line.

Esc [ g m

Set graphics rendition (color, etc.). More than one change can be specified by using semicolons between each g value:

Basic attributes

0	Normal
1	Bright
2	Dim
5	Bright background
7	Reverse video
8	Hidden

Foreground colors

30	Black
31	Red
32	Green
33	Yellow
34	Blue
35	Magenta
36	Cyan
37	White

Background colors

40	Black
41	Red
42	Green
43	Yellow
44	Blue
45	Magenta
46	Cyan
47	White

Usage

The C shell and all the utilities that come with it generate these ANSI escape sequences when writing to a file or pipe. When writing to the console, they interpret these sequences.

The builtin ansi() procedure can be used to generate the SGR color sequences without having to know the actual encoding, e.g., ansi("red").

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Hamilton C shell, as it first wakes up.

A first few commands.

You can set the screen colors to your taste.

Hamilton Laboratories ▷ Hamilton C shell 2012 ▷ User guide ▷ Language reference