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Re: PS1 multiline with colors

From: Greg Wooledge
Subject: Re: PS1 multiline with colors
Date: Fri, 5 Jul 2013 08:30:48 -0400
User-agent: Mutt/

On Fri, Jul 05, 2013 at 12:21:13PM +0000, BASTIDON, Stéphane wrote:
> Now my case is a little more complex:
> I want my prompt changes colors according to $PWD Then I write something like 
> that:

This is the kind of thing where I suggest using PROMPT_COMMAND.

normal=$(tput sgr0) red=$(tput setaf 1) green=$(tput setaf 2) ...
  case $PWD in
    /usr/local/*) color=$red ;;
    /var/*)       color=$green ;;
PS1='address@hidden:\[$color\]\w\[$normal\]\$ '
export normal red green ... PROMPT_COMMAND PS1

The PROMPT_COMMAND will be evaluated before PS1.  You can use it to set
variables that PS1 will use, all without the horrible speed penalty of
a fork/exec.

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