Possible Duplicate:
How do I add a user to the “sudo” group?
I've added myself back into the admin's group I think, by following this.
But I still can't do commands like:
sudo aptitude update
I get the message
oshirowanen is not in the sudoers file. This incident will be reported.
How do I add myself into the sudoers group now that I am in the admin group?
I was wondering if it is at all possible to find out when the computer was switched on, what files where accessed what folders were opened, what programs run and when the computer was resumed and put back to sleep (just like in the movies).
I know this isn't that important but it would be cool to know.
When i was using windows, i used to run defrags, ccleaner and revouninstaller once a month to keep the system and the registry clean.
I know ubuntu (and all linux distro) has a different system structure and doesnt need defrags, but i've heard there are some mainenance tasks that help to keep the system clean (for example, sudo apt-get clean or sudo apt-get autoremove)
How many of those commands/software (and please explain what they do and if they can compromise the system stability) do you know and use regularly?
What is the Ubuntu way for system administrators to receive system notifications, which typically take the form of e-mail sent to the root account?
Examples of such notifications are the output of cron jobs, or degraded RAID notifications.
On a pretty much default Ubuntu 10.04 installation, I can't find any way that anything happens to root's mail other than being deposited in /var/mail/root. How are users supposed to 1. discover it and 2. read it as it arrives?
I observe that on a warty, the installer added root: myusername to /etc/aliases. So back then the user who installed the system if (s)he read the local mail. So there seems to have been a regression somewhere along the way. Still this was not a complete solution, because Ubuntu users can't be expected to be aware that they have local mail and should set up their mail client to read it.
ADDED: given current replies, a server user should be able to cope, provided he's aware of the issue. Fair enough. But consider J. Random Desktop User, who doesn't know how to use a command line, and only knows how to click the mailbox icon to read his mail. How can he be notified that his system wants to tell him something? (Allow a one-time intervention by a more competent user if that's unavoidable.)
If more than one person is logged in on my computer, Ubuntu requires super user authentication when shutting down the computer. How can I make it so that any user can shutdown the computer without being asked for a password?