On 2018-08-11, Stefan Krusche <li...@stefan-krusche.de> wrote: >> >> 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. >> --- >> >> The new 'su' is useless for me because it cannot launch root program. >> I did the modification in /etc/login.defs and restore the previous >> behavior. However I am concern with the statement " Doing plain 'su' >> is a really bad idea for many reasons". >> >> Could someone explain to me why this is a bad behavior? >> >> Pétùr > > Hello Pétùr, > > only recently until a couple days ago there was a lengthy discussion about > just > that. Have you missed that? Have a look in the archives for a subject line > like > this: "use of su vs sudo" ...
There was a lengthy discussion, but within it I don't remember anyone detailing the numerous reasons (or any reason at all) executing plain 'su' is a "really bad idea," (where I'm reading "really bad idea" to mean having unintended and very detrimental consequences to the hapless user). > Kind regards, > Stefan > > -- "She was a blank wall, fresh painted." Louise Erdrich, Love Medicine