Re: Printing in red during output from head

[Greg Wooledge]

On Wed, Jul 21, 2021 at 06:41:26PM +0100, Chris Elvidge wrote:
> On 21/07/2021 05:32 pm, lisa-asket@perso.be wrote:
> 
> >        | sed -e 's/==>/\x1B[01;31m==>/;s/<==/<==\x1B[0m/'
> > 
> 
> I'll go along with that way of inserting escape sequences (\x1B).
> 
> Certainly \033 and \e don't seem to work as alternatives to Esc (on my
> command line (bash 5.1.0)

Bash is not performing the conversion here, because the content is inside
plain old single quotes.  The code above only works if sed does it.

Whether sed does this conversion will depend on the implementation of sed.