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Re: Please help with error message

Stephan Seitz <stse+debian@fsing.rootsland.net> writes:

> On Di, Aug 07, 2018 at 10:08:06 +0200, Rodolfo Medina wrote:
>>$ echo $PATH
>>rodolfo@sda6-acer:~$ su
> You are using testing/unstable, aren’t you?
> The su binary was replaced with another one, and now Debian is breaking user
> space again. :-(
> Now su alone doesn’t change the path but keeps the user path. You have to use
> „su -”.
>  The util-linux implementation of /bin/su is now used, replacing the
>  one previously supplied by src:shadow (shipped in login package), and
>  bringing Debian in line with other modern distributions. The two
>  implementations are very similar but have some minor differences (and
>  there might be more that was not yet noticed ofcourse), e.g.
>  - new 'su' (with no args, i.e. when preserving the environment) also
>    preserves PATH and IFS, while old su would always reset PATH and IFS
>    even in 'preserve environment' mode.
>  - su '' (empty user string) used to give root, but now returns an error.
>  - previously su only had one pam config, but now 'su -' is configured
>    separately in /etc/pam.d/su-l
>  The first difference is probably the most user visible one. Doing
>  plain 'su' is a really bad idea for many reasons, so using 'su -' is
>  strongly recommended to always get a newly set up environment similar
>  to a normal login. If you want to restore behaviour more similar to
>  the previous one you can add 'ALWAYS_SET_PATH yes' in /etc/login.defs.

Yes, if becoming root with with `su -' the error about what is the present
thread disappears...


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