My coworker was doing what should've been a straight-forward install of memcached this weekend on our Ubuntu 10.04.04 LTS server, but something went awry. I'm still trying to figure out the details, but I can tell you:
$ /lib/libc.so.6 GNU C Library (Ubuntu EGLIBC 2.11.1-0ubuntu7.12) stable release version 2.11.1, by Roland McGrath et al. Copyright (C) 2009 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Compiled by GNU CC version 4.4.3. Compiled on a Linux >>3.2.0-23-generic<< system on 2012-11-15. Available extensions: crypt add-on version 2.1 by Michael Glad and others GNU Libidn by Simon Josefsson Native POSIX Threads Library by Ulrich Drepper et al BIND-8.2.3-T5B
However, I also see this:
$ ldd --version ldd (Ubuntu EGLIBC 2.15-0ubuntu10.5) 2.15 Copyright (C) 2012 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Written by Roland McGrath and Ulrich Drepper.
With comparison to another Ubuntu 10.04.04 LTS machine, I know that 2.11.1 is where it ought to be, unless we try to use the upgrade tools to go to Ubuntu 12.04 LTS. But what is the best path to get there? Do I copy over libraries from the working machine until it all works, or is there a better way?