How to change the output color of echo in Linux

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刺人心
刺人心 2020-11-22 04:28

I am trying to print a text in the terminal using echo command.

I want to print the text in a red color. How can I do that?

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  •  囚心锁ツ
    2020-11-22 04:57

    My favourite answer so far is coloredEcho.

    Just to post another option, you can check out this little tool xcol

    https://ownyourbits.com/2017/01/23/colorize-your-stdout-with-xcol/

    you use it just like grep, and it will colorize its stdin with a different color for each argument, for instance

    sudo netstat -putan | xcol httpd sshd dnsmasq pulseaudio conky tor Telegram firefox "[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+" ":[[:digit:]]+" "tcp." "udp." LISTEN ESTABLISHED TIME_WAIT
    

    Note that it accepts any regular expression that sed will accept.

    This tool uses the following definitions

    #normal=$(tput sgr0)                      # normal text
    normal=$'\e[0m'                           # (works better sometimes)
    bold=$(tput bold)                         # make colors bold/bright
    red="$bold$(tput setaf 1)"                # bright red text
    green=$(tput setaf 2)                     # dim green text
    fawn=$(tput setaf 3); beige="$fawn"       # dark yellow text
    yellow="$bold$fawn"                       # bright yellow text
    darkblue=$(tput setaf 4)                  # dim blue text
    blue="$bold$darkblue"                     # bright blue text
    purple=$(tput setaf 5); magenta="$purple" # magenta text
    pink="$bold$purple"                       # bright magenta text
    darkcyan=$(tput setaf 6)                  # dim cyan text
    cyan="$bold$darkcyan"                     # bright cyan text
    gray=$(tput setaf 7)                      # dim white text
    darkgray="$bold"$(tput setaf 0)           # bold black = dark gray text
    white="$bold$gray"                        # bright white text
    

    I use these variables in my scripts like so

    echo "${red}hello ${yellow}this is ${green}coloured${normal}"
    

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