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Re: Printing in red during output from head

From: Greg Wooledge
Subject: Re: Printing in red during output from head
Date: Wed, 21 Jul 2021 14:04:24 -0400

On Wed, Jul 21, 2021 at 06:41:26PM +0100, Chris Elvidge wrote:
> On 21/07/2021 05:32 pm, 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.

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