Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Thu, 7 Jul 2016 17:57:13 -0500

Hi Stephen,

On 07/07/2016 09:45 AM, Stephen Molloy wrote:
> While building Docker containers, I had an error that turned out to be
> due to the lack of a $USER environment variable.  When makeBaseApp.pl is
> called, it tries to figure out the username in the GetUser subroutine,
> using the following command:
> 
> $user= $opt_u|| $ENV{USER}|| $ENV{USERNAME}|| Win32::LoginName();

I agree that doesn't look terribly robust, but for a Linux environment
to not define $USER seems rather unusual. Does this one-liner output the
username correctly?
  perl -e 'printf "%s\n", getlogin();'

> Of course, it’s very possible that this issue is caused by something
> that I am doing wrong….

I'm wondering why you're using makeBaseApp.pl from inside a docker
container, and why it isn't setting $USER, but that's more from curiosity...

- Andrew

-- 
Arguing for surveillance because you have nothing to hide is no
different than making the claim, "I don't care about freedom of
speech because I have nothing to say." -- Edward Snowdon

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System