I'd like to briefly change my terminal output color, run a Ruby script so that standard output prints in that changed color, 'sleep' for a second, and then change it back. I know how to set colors, like for the prompt:
PS1="\e[0;36m[\w] \e[m "
I imagine I need to write a Bash function to do this. What would that look like?
Here is a Ruby script to show all the terminal colors. Download it or run the code below.
def color(index)
normal = "\e[#{index}m#{index}\e[0m"
bold = "\e[#{index}m\e[1m#{index}\e[0m"
"#{normal} #{bold} "
end
8.times do|index|
line = color(index + 1)
line += color(index + 30)
line += color(index + 90)
line += color(index + 40)
line += color(index + 100)
puts line
end
You can do it within Ruby (assuming you're on Linux; Windows requires a library/gem whose name I can't remember at the moment) using the normal codes you would use in bash, e.g.
puts "\e[31m etc Your text here."
To reset to normal display:
puts "\e[0m"
Adjust to taste.
puts (or print) "\e[31m" at the beginning of your script, and the terminal text color will stay red (or whatever color you choose) until you print another ANSI color code.You can also use the Term Ansicolor gem to change it from inside a running script.
One may also use the Colorize gem.
Installation:
sudo gem install colorize
Usage:
require 'colorize'
puts "I am now red.".red
puts "I am now blue.".green
puts "I am a super coder".yellow
This answer is copied from How can I use Ruby to colorize the text output to a terminal?.
