TrueCrypt asks you for a password because mounting a filesystem requires superuser privileges. Do not circumvent it by allowing to run truecrypt
as root without password, this is insecure as a malicious script can get elevated privileges by mounting a special-crafted container, and gain root privileges from it (e.g. setsuid binaries on in an ext2 filesystem or mounting on /
).
Kubuntu & Muon
Kubuntu is an Ubuntu derivative. Information for Kubuntu can be found on the Kubuntu homepage. The Kubuntu 11.10 release notes says:
Muon Suite 1.2
The Kubuntu team is proud to present our new suite of tools for
installing and managing software. Installing of .deb packages,
updating, and software management is all part of this new, integrated
suite, specifically designed to work with Debian style package
management...
The kubuntu-desktop package is recommending (installing as default):
muon, package manager for KDE
muon-installer, utility for browsing, installing, and removing applications
muon-notifier, update notifier for KDE
The package muon is also recommending the muon-updater, an update manager for KDE.
The latest information of the Muon can be found from the developer's blog.
Apt - upgrade and dist-upgrade
The "not upgraded" packages could need to install some new packages. The "upgrade" action can't do this.
The apt manual page (man apt-get
):
upgrade will
upgrade is used to install the newest versions of all packages
currently installed...under no circumstances are currently installed
packages removed, or packages not already installed retrieved and
installed. New versions of currently installed packages that cannot be
upgraded without changing the install status of another package will
be left at their current version...
dist-upgrade will
dist-upgrade in addition to performing the function of upgrade, also
intelligently handles changing dependencies with new versions of
packages; apt-get has a "smart" conflict resolution system, and it
will attempt to upgrade the most important packages at the expense of
less important ones if necessary.
So, the apt-get dist-upgrade
command may remove some packages...
Best Answer
This is a deliberate change in behaviour (source):
The relevant PolicyKit policy is in the file
/var/lib/polkit-1/localauthority/10-vendor.d/com.ubuntu.desktop.pkla
:This grants permission for anybody in the admin group to update packages without having to enter a password. I've never used PolicyKit before now, but based on my reading of the manpage for pklocalauthority, to override this you should create a this file..
/var/lib/polkit-1/localauthority/50-local.d/require-password-to-update.pkla
you'll need superuser priviledges to create it, so use this command...
gksudo gedit /var/lib/polkit-1/localauthority/50-local.d/require-password-to-update.pkla
which will open a new file in gedit and put the following policy entry in it:
Save this and exit gedit, you can now open update manager and it will ask you to confirm your password before applying any updates.