On Fri, 06 Jul 2018 11:54:33 -0400
Lew Pitcher  wrote:

> That's one way to do it. That will leave a shell running as the "pi"
> user, and start a second shell as the "peter" user. It will not change
> the utmp, so who(1) will still report "pi" as logged on, and not "peter".
> If the OP wants the "peter" shell to use all the "peter" login settings
> (home directory, etc), the command should be
>   su -l peter
> In either case, when the OP exit's the "peter" shell, he'll return to the
> "pi" shell.

 To avoid that do

exec su -l peter

 Which replaces pi's shell with peter's.

--
Steve O'Hara-Smith                          |   Directable Mirror Arrays
C:\>WIN                                     | A better way to focus the sun
The computer obeys and wins.                |    licences available see
You lose and Bill collects.                 |    http://www.sohara.org/

--- SoupGate-Win32 v1.05