root@localhost:/etc/apt# sudo sh -c "echo 'Package: *' >> /etc/apt/preference.d/pinning"
sh: cannot create /etc/apt/preference.d/pinning: Directory nonexistent
root@localhost:/etc/apt# sudo sh -c "echo 'Pin: release a='$UBUNTU_VERSION >> /etc/apt/preference.d/pinning"sh: cannot create /etc/apt/preference.d/pinning: Directory nonexistent
root@localhost:/etc/apt# sudo sh -c "echo 'Pin-Priority: 1990' >> /etc/apt/preference.d/pinning"
sh: cannot create /etc/apt/preference.d/pinning: Directory nonexistent
root@localhost:/etc/apt# apt-get update
Ign http://old-releases.ubuntu.com natty InRelease
Ign http://old-releases.ubuntu.com oneiric InRelease
Ign http://old-releases.ubuntu.com oneiric-updates InRelease
Ign http://ppa.launchpad.net oneiric InRelease
Hit http://old-releases.ubuntu.com natty Release.gpg
Hit http://ppa.launchpad.net oneiric Release.gpg
Hit http://old-releases.ubuntu.com oneiric Release.gpg
Hit http://ppa.launchpad.net oneiric Release
Hit http://old-releases.ubuntu.com oneiric-updates Release.gpg
Hit http://old-releases.ubuntu.com natty Release
Hit http://ppa.launchpad.net oneiric/main Sources
Hit http://old-releases.ubuntu.com oneiric Release
Hit http://ppa.launchpad.net oneiric/main amd64 Packages
Hit http://ppa.launchpad.net oneiric/main i386 Packages
Ign http://ppa.launchpad.net oneiric/main TranslationIndex
Hit http://old-releases.ubuntu.com oneiric-updates Release
Hit http://old-releases.ubuntu.com natty/main amd64 Packages
Hit http://old-releases.ubuntu.com natty/main i386 Packages
Ign http://old-releases.ubuntu.com natty/main TranslationIndex
Hit http://old-releases.ubuntu.com oneiric/universe Sources
Hit http://old-releases.ubuntu.com oneiric/universe amd64 Packages
Hit http://old-releases.ubuntu.com oneiric/universe i386 Packages
Hit http://old-releases.ubuntu.com oneiric/universe TranslationIndex
Hit http://old-releases.ubuntu.com oneiric-updates/universe Sources
Hit http://old-releases.ubuntu.com oneiric-updates/universe amd64 Packages
Hit http://old-releases.ubuntu.com oneiric-updates/universe i386 Packages
Hit http://old-releases.ubuntu.com oneiric-updates/universe TranslationIndex
Ign http://ppa.launchpad.net oneiric/main Translation-en
Hit http://old-releases.ubuntu.com oneiric/universe Translation-en
Hit http://old-releases.ubuntu.com oneiric-updates/universe Translation-en
Ign http://old-releases.ubuntu.com natty/main Translation-en
Reading package lists... Done
root@localhost:/etc/apt# apt-get -f upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... failed.
The following packages have unmet dependencies:
 libc-dev-bin : Depends: libc6 (> 2.15) but 2.13-20ubuntu5.2 is installed
 libc6 : Depends: libc-bin (= 2.13-20ubuntu5.2)
 libc6-dev : Depends: libc6 (= 2.15-0ubuntu10.4) but 2.13-20ubuntu5.2 is installed
 libnih-dbus1 : Depends: libnih1 (= 1.0.3-4ubuntu9.1) but 1.0.3-4ubuntu2 is installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
E: Unable to correct dependencies