I tried this, and got apt-get running back successfully. sudo apt-get remove libc6-amd64:i386 libc6-dev-amd64:i386
( credit to : Sneetsher ) http://askubuntu.com/questions/701065/how-to-recover-from-an-apt-get-problem -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to eglibc in Ubuntu. https://bugs.launchpad.net/bugs/1365375 Title: package libc6-dev-i386 (not installed) failed to install/upgrade: trying to overwrite '/usr/include/gnu', which is also in package libc6 -dev-amd64 2.19-0ubuntu6.3 Status in eglibc package in Ubuntu: Confirmed Bug description: apt-get install gcc-multilib broke it! ProblemType: Package DistroRelease: Ubuntu 14.04 Package: libc6-dev-i386 (not installed) ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6 Uname: Linux 3.13.0-35-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.14.1-0ubuntu3.3 Architecture: amd64 Date: Thu Sep 4 08:50:46 2014 DpkgTerminalLog: Preparing to unpack .../libc6-dev-i386_2.19-0ubuntu6.3_amd64.deb ... Unpacking libc6-dev-i386 (2.19-0ubuntu6.3) ... dpkg: error processing archive /var/cache/apt/archives/libc6-dev-i386_2.19-0ubuntu6.3_amd64.deb (--unpack): trying to overwrite '/usr/include/gnu', which is also in package libc6-dev-amd64 2.19-0ubuntu6.3 DuplicateSignature: package:libc6-dev-i386:(not installed):trying to overwrite '/usr/include/gnu', which is also in package libc6-dev-amd64 2.19-0ubuntu6.3 ErrorMessage: trying to overwrite '/usr/include/gnu', which is also in package libc6-dev-amd64 2.19-0ubuntu6.3 SourcePackage: eglibc Title: package libc6-dev-i386 (not installed) failed to install/upgrade: trying to overwrite '/usr/include/gnu', which is also in package libc6-dev-amd64 2.19-0ubuntu6.3 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/1365375/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp