Using color in scripts Post: 303033773

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Operating Systems Linux Ubuntu Using color in scripts Post 303033773 by wisecracker on Thursday 11th of April 2019 01:34:29 PM

04-11-2019

Registered User

Some of these terminal escape codes even 'tput' can't do.
All work on CygWin's 'mintty' terminal too.

Code:

#!/bin/sh

# For those that do not have tput.
# Some of these cannot even be done using tput!
# All work on the majority of terminals but some terminals can't do them all.

# Resize the terminal on the fly, even works on CygWin's mintty, this resizes to 30 rows by 86 columns.
echo "Resize terminal to 30 x 86."
printf "%b" "\033[8;30;86t"
sleep 2
# And resize to a standard size of 24 rows by 80 columns.
echo "Resize terminal to 24 x 80."
printf "%b" "\033[8;24;80t"

# Reset terminal for machines that do not have it.
echo "Reset the terminal."
sleep 2
printf "%b" "\033c\033[0m\033[2J\033[H"

# Clear the screen.
echo "Clear the screen."
sleep 1
printf "%b" "\033[2J\033[H"
echo "Alternate clear screen."
sleep 1
# OR...
printf "%b" "\033[2J\033[1;1f"

# Clear the terminal current buffer only.
printf "%b" "\033[3J"

# Write into the terminal title bar.
printf "%b" "\033]0;Barry Walker.\007"
sleep 2
# And clear it again.
printf "%b" "\033]0;\007"

Enjoy lads and lassies...

Last edited by wisecracker; 04-11-2019 at 02:45 PM..

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ncurses_init_color

NCURSES_INIT_COLOR(3)							 1						     NCURSES_INIT_COLOR(3)

ncurses_init_color - Define a terminal color

SYNOPSIS

       int ncurses_init_color (int  $color, int  $r, int  $g, int  $b)

DESCRIPTION

	Defines  or redefines the given color. When this function is called, all occurrences of the given color on the screen, if any, immediately
       change to the new definition.

	Color capabilities must be supported by the terminal and initialized using ncurses_start_color(3) prior to calling this function. In addi-
       tion, the terminal must have color changing capabilities; use ncurses_can_change_color(3) to check for this.

PARAMETERS

	      o $color
		- The identification number of the color to redefine. It may be one of the default color constants.

	      o $r
		- A color value, between 0 and 1000, for the red component.

	      o $g
		- A color value, between 0 and 1000, for the green component.

	      o $b
		- A color value, between 0 and 1000, for the blue component.

RETURN VALUES

	Returns  -1 if the function was successful, and 0 if ncurses or terminal color capabilities have not been initialized or the terminal does
       not have color changing capabilities.

SEE ALSO

       ncurses_color_content(3), ncurses_start_color(3).

PHP Documentation Group 												     NCURSES_INIT_COLOR(3)