Hello,
I am working on a Bash script and I wanted to change the color of some of the output to emphasize on some specific words.
For example, I want to be able to print the text in green when the script is successful and in red when the script fails.
Does anyone know an easy way of doing so?
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Hi there,
Yes, you can do that with the ANSI escape characters. You can find a list of those characters here.
For example, if you wanted to print green text, you could do the following:
#!/bin/bash
# Set the color variable
green='\033[0;32m'
# Clear the color after that
clear='\033[0m'
printf "The script was executed ${green}successfully${clear}!"
A quick rundown of the script:
clear
so that we could reset the color of the terminal, otherwise all of the output will be green.printf
we printout the messageHere is the output of the script:
If you prefer using echo
instead of printf
you need to make sure that you add the -e
flag:
#!/bin/bash
# Set the color variable
green='\033[0;32m'
# Clear the color after that
clear='\033[0m'
echo -e "The script was executed ${green}successfully${clear}!"
Here are some other common colors that you could:
#!/bin/bash
# Color variables
red='\033[0;31m'
green='\033[0;32m'
yellow='\033[0;33m'
blue='\033[0;34m'
magenta='\033[0;35m'
cyan='\033[0;36m'
# Clear the color after that
clear='\033[0m'
# Examples
echo -e "The color is: ${red}red${clear}!"
echo -e "The color is: ${green}green${clear}!"
echo -e "The color is: ${yellow}yellow${clear}!"
echo -e "The color is: ${blue}blue${clear}!"
echo -e "The color is: ${magenta}magenta${clear}!"
echo -e "The color is: ${cyan}cyan${clear}!"
Output:
You can also change the text background with the following:
#!/bin/bash
# Color variables
bg_red='\033[0;41m'
bg_green='\033[0;42m'
bg_yellow='\033[0;43m'
bg_blue='\033[0;44m'
bg_magenta='\033[0;45m'
bg_cyan='\033[0;46m'
# Examples
echo -e "The background color is: ${red}red${clear}!"
echo -e "The background color is: ${green}green${clear}!"
echo -e "The background color is: ${yellow}yellow${clear}!"
echo -e "The background color is: ${blue}blue${clear}!"
echo -e "The background color is: ${magenta}magenta${clear}!"
echo -e "The background color is: ${cyan}cyan${clear}!"
Output:
Hope that this helps! Regards, Bobby
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