Color escape codes in pretty printed columns

Question

I have a tab-delimited text file which I send to column to \"pretty print\" a table.

Original file:

1blablablabla

        

Answer 1

In my case, I wanted to selectively colorise values in a column depending on its value. Let's say I want okokokok to be green and blabla to be red.

I can do it such way (the idea is to colorise values of columns after columnisation):

GREEN_SED='\\033[0;32m'
RED_SED='\\033[0;31m'
NC_SED='\\033[0m' # No Color

column -s$'\t' -t  | echo -e "$(sed -e "s/okokokok/${GREEN_SED}okokokok${NC_SED}/g" -e "s/blabla/${RED_SED}blabla${NC_SED}/g")"

Alternatively, with a variable:

DATA=$(column -s$'\t' -t )

GREEN_SED='\\033[0;32m'
RED_SED='\\033[0;31m'
NC_SED='\\033[0m' # No Color
echo -e "$(sed -e "s/okokokok/${GREEN_SED}okokokok${NC_SED}/g" -e "s/blabla/${RED_SED}blabla${NC_SED}/g" <<< "$DATA")"

Take a note of that additional backslash in values of color definitions. It is made for sed to not interpret an origingal backsash.

This is a result: