The only way I know how to get into thuban2 is to be on canopus or mirzam, and from there,
ssh thuban2
To do important stuff, one needs to have root (aka superuser) privileges.
I tried sudo blah blah blah with limited results.
Bruce says I need instead to do:
sudo su – (that’s a blank followed by a minus sign) . On canny running as jweisber, it asks for my password and then drops me into canny root;
{canopus.physics.careleton.edu}:{jweisber}:~> sudo su –
[sudo] password for jweisber:
Last login: Tue Aug 25 11:48:59 CDT 2026 on :0
[root@canopus ~]#
After sshing to thuban2 from canny as jweisber, the same command
(sudo su – )drops me into thuban2 root.
From Dan, here are some further superuser etc commands Aug 2026:
On clients, (but seemingly not on thuban2):
su – root (followed by root password) (i got it to work on canny, not thuban2)
sudo -i (followed by my password) I think runs my .cshrc
see also my entry for location of backups on canopus