bash wrapper to color stderr red

Question

Bash supports colors, i.e. \\033[31m switches to red and \\033[0m switches back to uncolored.

I would like to make a small bash-wrapper that re

Answer 1

Based on andrewdotn's wrapper

Changes:

• Puts the stderr output back to stderr
• Avoid echo -e processing content in the lines

wrapper

#!/bin/bash

"${@}" 2> >(
while read line; do
    echo -ne "\033[31m" 1>&2
    echo -n "${line}" 1>&2
    echo -e "\033[0m" 1>&2
done
)

Issues: The output lines end up grouped, rather than mixed stdout/stderr

Test script:

#!/bin/bash

echo Hi
echo "\033[32mStuff"
echo message
echo error 1>&2
echo message
echo error 1>&2
echo message
echo error 1>&2

Output:

Hi
\033[32mStuff
message
message
message
error # <- shows up red
error # <- shows up red
error # <- shows up red