Dearie Thanks for your offer of help; however.....
> Sent: Tuesday, March 01, 2022 at 3:10 AM > From: "Andrew M.A. Cater" <amaca...@einval.com> > To: debian-user@lists.debian.org > Subject: Re: Authentication failed after su- > > > If you use sudo: prefix the above command with sudo > > It may be that you need > > su - -l -c "rest of the line" > > su alone doesn't always get you root equivalent: the default changed a while > ago now so su - is needed. Firstly, I tried the command: sudo su - -l -c "rest of the line" It didn't work Next, I tried: sudo su- -l -c "rest of the line" It didn't work either On the third try, I typed: sudo -i followed by "rest of the line" (I ignored -l -c because if I included them, the "rest of the line" wouldn't be executed. Besides I don't know what the arguments -l -c stand for.) Alternatively, one could type: sudo su Best regards. Stella