From: Tobias Leupold <tl@stonemx.de>
To: ~alpine/users@lists.alpinelinux.org
Subject: Re: ash and su/su -
Date: Wed, 29 May 2024 20:23:29 +0200
Message-ID: <4151433.6PsWsQAL7t@ginuog>
In-Reply-To: <ZlcdqdGD8UvfzoVx@mx.unresolved.name>
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E-Mail von juef vom Mittwoch, 29. Mai 2024, 14:20:57 CEST:
> Hi,
> 
> (Wed, 29 May 12:42) Tobias Leupold:
> > When I do a plain "su", I get a prompt that would be defied as "\w #".
> > Where is that defined?! It neither matches /etc/profile, nor the PS1
> > definition in my user's ~/.profile, nor the one in /root/.profile ...
> 
> It's probably here:
> https://git.busybox.net/busybox/tree/shell/ash.c?id=c5a1be25ba6dd705382ce6c2
> 5d96a32f79974c04#n2316
> 
> also see:
> https://git.busybox.net/busybox/tree/shell/ash.c?id=c5a1be25ba6dd705382ce6c2
> 5d96a32f79974c04#n14757
> 
> if you define ENV, than it will load, i.e.:
> cat /tmp/test-env
> PS1="\u@\h:\w # "
> 
> export ENV=/tmp/test-env

Hey, thanks for the hint!

I managed to get what I want using the ENV variable:

I created /etc/profile.d/99local.sh, only containing

    export ENV="/etc/local-env"

and said file containing the aliases I want and the PS1 definition:

    if [[ "$(whoami)" == "root" ]]; then
        PS1="\[\033]0;\u@\h:\W\007\]\[\033[01;31m\]\h\[\033[01;34m\] \W #\
[\033[00m\] "
    else
        PS1="\[\033[01;32m\]\u@\h\[\033[01;34m\] \W \$\[\033[00m\] "
    fi
    
    alias ls="ls -h --color=auto"
    alias ll="ls -l"
    alias vi="vim"

Now, this file is both sourced when I log in, and also when I do a plain "su". 
Thus, I always get my nice PS1 and my aliases :-)

Nice! Thanks again!

Cheers, Tobias