gistfile1.txt

    # uname -a
    Linux test06 2.6.38-8-virtual #42-Ubuntu SMP Mon Apr 11 04:06:34 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

    # cat /etc/lsb-release 
    DISTRIB_ID=Ubuntu
    DISTRIB_RELEASE=11.04
    DISTRIB_CODENAME=natty
    DISTRIB_DESCRIPTION="Ubuntu 11.04"

    # apt-get install ruby1.9.1-full
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    ruby1.9.1-full is already the newest version.
    0 upgraded, 0 newly installed, 0 to remove and 25 not upgraded.

    # update-alternatives --config ruby
    update-alternatives: error: no alternatives for ruby.

    # ls -l /etc/alternatives/ru*
    ls: cannot access /etc/alternatives/ru*: No such file or directory