Cannot change printer settings without root access

[Ralf Mardorf]

On Sun, 11 Jan 2015 13:12:53 +0100, Ralf Mardorf wrote:
> On Sun, 11 Jan 2015 06:49:33 -0500, Clay Weber wrote:
> > > sudo chown -R $USER:$USER $HOME
> > > That should avoid wrong substitutions. :)
> > Yes, you are correct, but often it is clearer to users the long
> > way ;)
> 
> I didn't follow this thread, what do you want to archive by 'sudo
> chown -R $USER:$USER $HOME'?
> 
> [rocketmouse at archlinux ~]$ echo $USER
> rocketmouse
> 
> [rocketmouse at archlinux ~]$ sudo -i
> [root at archlinux ~]# echo $USER
> root
> 
> [rocketmouse at archlinux ~]$ su 
> [root at archlinux rocketmouse]# echo $USER
> rocketmouse
> 
> To e.g. check if something is started with or without root privileges
> $USER is useless, then there's the need to check the id:
> 
> if [ "$(id -u)" = "0" ]; then printf "\nDon't run this script as
> root :).\n\n"; exit 1; fi
> 
> However, usage of $HOME is risky too:
> 
> [rocketmouse at archlinux ~]$ echo $HOME
> /home/rocketmouse
> 
> [rocketmouse at archlinux ~]$ sudo -i
> [root at archlinux ~]# echo $HOME
> /root
> 
> [rocketmouse at archlinux ~]$ su
> [root at archlinux rocketmouse]# echo $HOME
> /root
> 
> I don't want to reboot and check how my *buntu installs behave, but
> they likely behave in the same way ;).

PS: IOW it depends from where you run it:

$ sudo echo $USER ; sudo echo $HOME
rocketmouse
/home/rocketmouse

$ su
#  sudo echo $USER ; sudo echo $HOME
rocketmouse
/root

$ sudo -i
#  sudo echo $USER ; sudo echo $HOME
root
/root