On 2018-08-12 00:13:31 +0000, Dale Forsyth wrote: > ________________________________ > From: Pétùr <[email protected]> > Sent: Saturday, 11 August 2018 7:41 PM > To: debian-user > Subject: New su behavior in util-linux 2.32 > > Using 'su' generates now an path error when launching programs such as > 'shutdown'. The cause is a new behavior described below. > --- > util-linux (2.32-0.4) unstable; urgency=medium > > 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. > ---
And this is illogical: the default behavior cannot be a bad idea. If the current behavior is really bad, then 'su' should behave like 'su -'. > The new 'su' is useless for me because it cannot launch root program. I have no such problem, though. -- Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
