Re: csh to sh migration for root in RELENG_14

On 11/17/23 12:41, Garrett Wollman wrote:
> <<On Fri, 17 Nov 2023 13:40:44 -0500, mike tancsa <mike@sentex.net> said:
> 
>> I am trying to bring my environment along from previous versions where
>> csh was the default shell and now trying to get used to sh. In the past
>> things like
> 
>> sudo su
> 
>> would pick up my settings in /root/.cshrc automatically. However, with
>> sh I have to do
> 
>> sudo su -l root
> 
>> Is there a way to configure it so I dont need the -l as part of the su
>> to get the same behavior ?
> 
> See sh(1) section "Invocation", which describes how /bin/sh reads its
> initialization files, and in particular, that (as POSIX specifies)
> interactive non-login shells do not read any startup files unless the
> environment variable `ENV` is set.  This is stupid but required by the
> standard.
> 
> I would recommend changing root's shell to something that better suits
> your needs: either change it back to csh, or install the appropriate
> package and set it to bash or zsh, both of which read startup files
> for all interactive shells, not just login shells.

Though it was worse when upgrading using portupgrade and less likely to 
be an issue with packages, I would still consider trying to keep root's 
shell as a shell that is part of base and if I really wanted a different 
one then I would have a 3rd party shell get launched from a shell from 
base as part of the sign in process so it could 'fall back' to skipping 
the launch if it fails. This comes from having had issues with 3rd party 
shells not functioning for reasons such as it depending on a library 
that failed to install properly. I do not have my desktop boot into X 
automatically or use a graphical login manager for the same reason; 
problems are easier to fix when you can still log in successfully. I 
have not often had such issues, but I certainly have had them.

> -GAWollman
> 
>