Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

How to print awk's results with different colors for different fields?

Tags:

This file has 3 fields. I wanted e.g. the first 2 fields in green, and the third in white (NB : black background), so I tried :

awk '{print "\033[0;32m"$1"\033[0m", "\033[0;32m"$2"\033[0m", "\033[0;37m"$3"\033[0m"} }' chrono.txt

and everything was green…

How must I proceed (if it is possible) ?

like image 830
ThG Avatar asked Jun 30 '11 20:06

ThG


2 Answers

To get color output from awk, you can use this approach.

function red(s) {
    printf "\033[1;31m" s "\033[0m "
}

function green(s) {
    printf "\033[1;32m" s "\033[0m "
}

function blue(s) {
    printf "\033[1;34m" s "\033[0m "
}

{
    print red($1), green($2), blue($3)
}
like image 79
Fredrik Pihl Avatar answered Sep 17 '22 17:09

Fredrik Pihl


An alternative to using awk functions is passing the colors in shell variables. E.g.

RED='\033[01;31m'
GREEN='\033[01;32m'
YELLOW='\033[01;33m'
BLUE='\033[01;34m'
NONE='\033[0m'

echo "Col1 Col2 Col3 Col4" | \
awk -v r=$RED -v y=$YELLOW -v g=$GREEN -v b=$BLUE -v n=$NONE \
 '{printf r$1n y$2n g$3n b$4n "\n"}'
like image 23
Matt Muggeridge Avatar answered Sep 19 '22 17:09

Matt Muggeridge