Colour highlighting output based on regex in shell

Question

I\'d like to know if I can colour highlight the output of a shell command that matches certain strings.

For example, if I run myCommand, with the output below:

Answer 1

Use awk.

 COLORIZE_AWK_COMMAND='{ print $0 }'
 if [ -n "$COLORIZE" ]; then
     COLORIZE_AWK_COMMAND='
     /pattern1/ { printf "\033[1;30m" }
     /pattern2/ { printf "\033[1;31m" }
     // { print $0 "\033[0m"; }'
 fi

then later you can pipe your output

... | awk "$COLORIZE_AWK_COMMAND"

printf is used in the patterns so we don't print a newline, just set the color.

Answer 2

There is an answer in superuser.com:

your-command | grep -E --color 'pattern|$'

or

your-command | grep --color 'pattern\|$'

This will "match your pattern or the end-of-line on each line. Only the pattern is highlighted..."