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Ive observed kind of strange behaviour. I have openSuse and when Im in console and want to gain root access for executing one command, after typing sudo it like switches me as if Id type su. I mean -when I want to execute next commands which requires root, I just type this command without sudo.

Is this normal or is it something wrong with my system?

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what you describe is the behaviour of sudo -i or sudo -s. do you perhaps have a command alias using the keyword 'sudo'? you can use 'alias' at the command line to show all your aliases. – Frank Thomas Apr 25 '14 at 12:19
No I do not have any aliases for sudo.... and I use sudo without any parameters; – user3548683 Apr 25 '14 at 12:29
Please specify exactly what you are running (the command) when you run sudo. Also, try whoami when it's in that "mode". – Elliott Frisch Apr 25 '14 at 12:55
I am trying to run zypper refresh :) after sudo zypper refresh, I have to provide root pass, and after execution completes, I can run this (or any other command that requires root priviledges) just as Id do with any no-root command. whoami tells me that Im logged as normal user (not root)..... – user3548683 Apr 25 '14 at 18:10
You shouldn't have to provide the root password. Sudo wants you to type your own password. Please paste a transcript of the session that shows everything you're doing. – Barmar Apr 26 '14 at 6:18

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