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Full Discussion: Ubuntu karmic koala 9.10
Operating Systems Linux Ubuntu Ubuntu karmic koala 9.10 Post 302385176 by pludi on Thursday 7th of January 2010 08:51:18 AM
Old 01-07-2010
Again: by default the root user on Ubuntu is made unavailable by setting a random password. That's because the philosophy of Ubuntu is not to confuse the user with differentiating between a regular user and root.

For that reason, Ubuntu uses sudo instead of su for anything that requires administration privileges. sudo, by default, asks for the password of the user trying to run a command, instead of the password of the user you're trying to run as. So if you're logged in as user 'bdiwakarteja', sudo will ask for the password of the user 'bdiwakarteja', not for the root password.
 

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qshutdown(1)						      General Commands Manual						      qshutdown(1)

NAME
qshutdown - An avanced shutdown tool SYNOPSIS
qshutdown [options] DESCRIPTION
qshutdown is a simple tool to choose a time or a number of minutes to shutdown, reboot, suspend or hibernate after. qshutdown will show itself 3 times as a warning if there are less than 70 seconds left. (if 1 Minute or local time +1 Minute was set it'll appear only once.) This program uses qdbus to send a shutdown/reboot/suspend/hibernate request to either the gnome- or kde-session-manager, to HAL/ConsoleKit/DeviceKit/UPower and if none of these works, the command 'sudo shutdown' will be used. OPTIONS
-h --help Prints options with description. -i Prints information about qshutdown. -v Prints all errors and warnings. NOTES
When sending the request to HAL or ConsoleKit, or the shutdown command is used, the Session will never be saved. If the shutdown command is used, the program will only be able to shutdown and reboot. If nothing happens when the shutdown- or reboot-time is reached, it means that one lacks the rights for the shutdown command. In this case one can do the following: Post the following in a terminal: $ EDITOR=nano sudo -E visudo and add this line: * ALL = NOPASSWD:/sbin/shutdown whereas * replaces the username or %groupname. For admins: If you want qshutdown to run with "parental lock" for every user, you can do $ sudo cp /usr/share/qshutdown/autostart/99qshutdown /etc/X11/Xsession.d/ and set the option Lock_all in /root/.qshutdown/qshutdown.conf to true. Note that qshutdown has to start once to generate the qshut- down.conf. Furthermore there is a need to do $ EDITOR=nano sudo -E visudo and add the following line to the sudoers: * ALL = NOPASSWD:/usr/bin/qshutdown If you should ever forget your set password, just remove the whole line starting with Password manually from the qshutdown.conf. FILES
The configurationfile (and logfile) is located at ~/.qshutdown/ (under Linux/Unix). The maximum Number of countdown_minutes is 1440 (24 hours). KNOWN ISSUES
There is no system tray icon for qshutdown in Ubuntu 11.04. SOLUTION: Type the following line in a terminal: $ gsettings set com.canonical.Unity.Panel systray-whitelist "['all']" HINTS ON USAGE
If you want qshutdown to stop "bugging" you, just remove the hook from "warnings on?". HOTKEYS
Ctrl+I information window Ctrl+Q Quit Ctrl+P Prefereces Ctrl+L write the run time once into the logfile (works only if qshutdown quits. To make it permanent set it in the preferences.) Ctrl+S set to shutdown Ctrl+R set to restart Ctrl+U set to suspend to RAM Ctrl+H set to hibernate Ctrl+E stop timer (only if the countdown has started and the admin didn't restrict the access) Shift+E to edit the config file (for this a password is necessary. If you are a user, you can set an "empty password" (leave the password field empty)). AUTHOR
Christian Metscher <hakaishi@web.de> 2011-10-23 qshutdown(1)
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