#!/bin/bash
#
#  dragging UNIX into the 21st century.
#  colors in the bash shell..
#
#  note: this script has no actual "use", it's just a demo
# 
#  ;o)
#  (or
#

clear

# 0 : black
# 1 : red
# 2 : green
# 3 : yellow
# 4 : blue
# 5 : magenta
# 6 : cyan
# 7 : grey
# 8 : white


# by the way, if you want your *first* line to be indented, do a blank before it.
echo -e " \033[1;31;7;5m\033[0m" # a quirk of bash, I guess.
echo -e " \033[1;32;7;5minstalling such-and-such program..\033[0m"

# anyways, back to the bash colors..


# you can enter escape character control codes directly, like this..

echo "Oh my! I am bold yellow!"
echo

# I used to use this method exclusively, but they tend to tricky to edit 
# in certain text editors. (the caret gets shifted out of line)
# fortunately, you can also enter bash colors like this..

echo -e '\033[1mThis is BOLD text..\033[0m'

# using the "-e" switch to tell bash to translate any escape characters that follow.

#	"\033["		represents the beginning of an escape sequence 
#				(on most platforms, you can also use "\E" or "\e")
#	"[1"		switches on the bold attribute
#	"[0"		switches it off again
#	"m"			terminates each escape sequence


# plain colours..
echo
echo -e '\033[30mThis is black [38].\033[0m';
echo -e '\033[31mThis is red [31]\033[0m';
echo -e '\033[32mThis is green [32]\033[0m';
echo -e '\033[33mThis is yellow [33]\033[0m';
echo -e '\033[34mThis is blue [34]\033[0m';
echo -e '\033[35mThis is magenta [35]\033[0m';
echo -e '\033[36mThis is cyan [36]\033[0m';
echo -e '\033[37mThis is grey [37]\033[0m';
echo -e "\033[037mRegular White [037]\033[0m" #hmm
echo -e "\033[137mRegular White [137]\033[0m" #regular grey text
echo -e "\033[038mRegular White [038]\033[0m" #interesting, huh
echo

# it doesn't matter what style of quotes you use, they both work.

# bold..
echo
echo -e '\033[1mThis is BOLD text..\033[0m'
echo -e '\033[1;31mThis is bold red [31].\033[0m';
echo -e '\033[1;32mThis is bold green [32].\033[0m';
echo -e '\E[01;33mThis is bold yellow [33].\033[0m';
echo -e '\E[1;34mThis is bold blue [34].\033[0m';
echo -e '\E[1;35mThis is bold magenta [35].\033[0m';
echo -e '\e[1;36mThis is bold cyan [36].\033[0m';
echo -e '\e[1;37mThis is bold grey [37] (same as regular bold text).\033[0m';
echo -e '\e[1;30mThis is bold black [30].\033[0m';
echo
echo -en '\033[1;31m\033[1mBold Red, \033[0m' # note "-n" to disable the line-break
echo -en '\033[1;32m\033[1mGreen, \033[0m'
echo -en '\033[1;34m\033[1mand Blue \033[0m'
echo


# change the backgrounds..	

# example..
#echo -e "\E[color1;color2mtext.\033[0m"

#	"\E["	begins the escape sequence. (or "\033[", or "\e")

#	"color1" and "color2" are the foreground and a background colors. 
#	The order of the sequence is irrelevant, since the number ranges don't overlap.
#	background colour is forty-something, and foreground text colour is thirty-something.
 
#	"m"		terminates each escape sequence, as usual.

echo
echo -e "\033[37;44mRegular White [37] on Blue background [44]\033[0m"
echo -e "\E[37;41m\033[1mBold White [37] on Red background [41]\033[0m"
echo -e "\033[31;44m\033[1mBold Red [33] on Blue background [44]\033[0m"
echo -e "\E[35;46m\033[1mmagenta [35] on cyan background [46]\033[0m"

# for bolding the background use a "5"..
echo -e "\033[31;5;44m\033[1mBold Red [33] on BOLD Blue background [44]\033[0m"
echo -e "\033[35;5;43m\033[1mBold Magenta [33] on BOLD yellow background [44]\033[0m"
echo

# a few other bits and pieces..

# a "4" will underline the text..
echo -e "\033[4m Underlined Text \033[0m"
echo

# a "7" will invert the text..
echo -e "\033[7m Underlined Text (inverted)\033[0m"
echo -e "\033[4;45m Underlined Text on Magenta Background \033[0m"
echo -e "\033[1;33;5;45m Underlined Yellow Bold Text on Bold Magenta Background *phew* ;o)\033[0m"
echo -e "\033[7;36;45m more interesting effects! \033[0m"
echo


# reset all bash colours..
tput sgr0

# if you don't do this (and you might not want to) the text which
# follows will retain the color, ie. your command prompt.


# all's well that ends well.
exit 0