su makes not proper root

[Zoran Kolic]

On raspberry pi I installed 7.99 and use
su to get root. At first, I spoted that,
during shutdown, message says it came from
***@localhost. I expected ***@localhost.
Now, I have a lot of problems configuring
mail app. I could send mail outbound via
sender_canonical_maps, send from root to
user correctly. If I send from user to root,
it goes to /var/mail/root file, but mail
tries to read /var/mail/user file. I might
change it with "folder /var/mail/root" and
read as I should.
I'm puzzled how su on netbsd works. Have I
made a mistake or it is normal behaveour?
If normal, how to set /var/mail/root, since
.mailrc > "set folder=/var/mail/root" does
not work.
One thing to stress. I login as user via ssh.
The only option to get root is su, obviously.
Best regards

Zoran

[Valery Ushakov]

but mail tries to read /var/mail/user file. I might change it with
"folder /var/mail/root" and read as I should. I'm puzzled how su on
netbsd works. Have I made a mistake or it is normal behaveour?

su -

(also -l or -d)

-uwe

[Terho Uotila]

On Sat, 27 Sep 2014 07:37:31 +0200

Post by Zoran Kolic
On raspberry pi I installed 7.99 and use
su to get root. At first, I spoted that,
during shutdown, message says it came from

NetBSD su remembers your login id, unlike su used in some other OS.
Try id -p as root to see this.

If system has several admins, login id in shutdown message is probably
more informative, and even with only one admin I think it doesn't do
any harm.

Post by Zoran Kolic
Now, I have a lot of problems configuring
mail app. I could send mail outbound via
sender_canonical_maps, send from root to
user correctly. If I send from user to root,
it goes to /var/mail/root file, but mail
tries to read /var/mail/user file. I might
change it with "folder /var/mail/root" and
read as I should.

I redirect my root mail to main user address using /etc/mail/aliases
(if that helps)

IIRC, you can also use -f to read any mailbox you can access (mail -f
/path/to/mbox).

[Zoran Kolic]

Post by Terho Uotila
NetBSD su remembers your login id, unlike su used in some other OS.
Try id -p as root to see this.

I got answer with "su -" as the solution. Still it says

Post by Terho Uotila
I redirect my root mail to main user address using /etc/mail/aliases
(if that helps)

su - was proper for my complaint. I forgot to reread
man page, since I had wrong impression I remembered
it from eons ago. My bad.

With - I get proper path to /var/mail/root. Exactelly
what was needed. :)

Thank you for answer and best regards

Zoran

[Dan LaBell]

Post by Terho Uotila
On Sat, 27 Sep 2014 07:37:31 +0200

Post by Zoran Kolic
On raspberry pi I installed 7.99 and use
su to get root. At first, I spoted that,
during shutdown, message says it came from

NetBSD su remembers your login id, unlike su used in some other OS.
Try id -p as root to see this.

Just thought I'd add, that it adds SU_FROM to environment .