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  $ VBoxManage list vms
  $ VBoxManage showvminfo <vm>
  $ VBoxManage unregister <vm>
  $ VBoxManage controlvm <vm> poweroff
  $ VBoxManage startvm --type headless <vm>
  Step [0] was successfully - saving state

  Waiting for ssh login with user vagrant to sshd on port => 7222 to work
  ......................................................................................................................................................................................................Transferring /home/hudson-rose/Applications/vagrant/fedora/16/x86_64/default/definitions/fedora-16-x86_64/ to 

  # Hanging - endless wait for ssh on port 7222
  $ VBoxManage startvm --type headless fedora-16-x86_64
  Waiting for VM "fedora-16-x86_64" to power on...
  VM "fedora-16-x86_64" has been successfully started.


  ***echo 'vagrant'|sudo -S sh ''
  Executing command: echo 'vagrant'|sudo -S sh ''

Import Virtual Appliance (.ova)

[rose-dev@rose-git github]$ VBoxManage import github-enterprise-11.10.270-i386.ova 
Interpreting /data/home/rose-dev/applications/github/github-enterprise-11.10.270-i386.ova...
Disks:  gh-root753570270208 system 0:
 0: Suggested OS type: "Ubuntu"
    (change with "--vsys 0 --ostype <type>"; use "list ostypes" to list all possible values)
 1: Suggested VM name "GitHubEnterprise"
    (change with "--vsys 0 --vmname <name>")
 2: Number of CPUs: 2
    (change with "--vsys 0 --cpus <n>")
 3: Guest memory: 8192 MB
    (change with "--vsys 0 --memory <MB>")
 4: Network adapter: orig Network, config 1, extra type=Bridged
 5: SCSI controller, type LsiLogic
    (change with "--vsys 0 --unit 5 --scsitype {BusLogic|LsiLogic}";
    disable with "--vsys 0 --unit 5 --ignore")
 6: Hard disk image: source image=github-enterprise-11.10.270-i386-disk1.vmdk, target path=/data/home/rose-dev/VirtualBox VMs/GitHubEnterprise/github-enterprise-11.10.270-i386-disk1.vmdk, controller=5;channel=0
    (change target path with "--vsys 0 --unit 6")

[rose-dev@rose-git ~]$ VBoxManage startvm --type headless GitHubEnterprise
Waiting for VM "GitHubEnterprise" to power on...
VM "GitHubEnterprise" has been successfully started.


Vagrant file options:

Vagran SSH keys


#Installing vagrant keys
mkdir /home/vagrant/.ssh
chmod 700 /home/vagrant/.ssh
cd /home/vagrant/.ssh
wget --no-check-certificate '' -O authorized_keys
chown -R vagrant /home/vagrant/.ssh

Important: disable the SSL certificate check, e.g. wget --no-check-certificate.

Error: Read-only filesystem

Periodic flush:


sudo apt-get install g++-4.4
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.4 20
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.5 10
sudo apt-get install git
sudo apt-get install libboost-dev-all
sudo apt-get install libboost.*dev
sudo apt-get install autoconf automake autoproject libtool
  TODO: autoconf2.64 (2.67 config.status error?)
sudo apt-get install gfortran-4.4
sudo apt-get install flex
sudo apt-get install bison
sudo apt-get install ghostscript

apt-get remove --purge
apt-get clean
apt-get autoremove

sudo apt-get install git
sudo apt-get install libboost1.42-all-dev
sudo apt-get install g++-4.4 autoconf2.64 gfortran-4.4 libtool flex bison ghostscript
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.4 20
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.5 10

sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.4 20
sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.5 10
  $ ../ROSE/configure --prefix=$(pwd)/../install --with-boost=/usr --without-java

Important: disable SSH timeout

Shared Folder

  # config.vm.share_folder "name-identifier",
  #     "/path/within/your/vm", 
  #     "/path/on/your/real/machine"
  config.vm.share_folder("shared_folder", "${HOME}/shared_folder", "shared_folder", :nfs => false)

Note: NFS is faster, but requires the host to have nfsd privileges.

Customize VM before boot

For example, increase the VM's memory: do |config|
    # ..
    config.vm.customize ["modifyvm", :id, "--memory", 1024]

Package Management


  1. Install devscripts to make the life of the package manager easier.

     $ sudo apt-get install devscripts
  2. Search: get details (versions, etc.) of a package

     $ vagrant@ubuntu-11:~$ rmadison gcc
            gcc | 4:4.2.3-1ubuntu3 |         hardy | amd64, hppa, i386, ia64, lpia, powerpc, sparc
            gcc | 4:4.2.3-1ubuntu6 | hardy-updates | amd64, hppa, i386, ia64, lpia, powerpc, sparc
            gcc | 4:4.4.3-1ubuntu1 |         lucid | amd64, armel, i386, ia64, powerpc, sparc
            gcc | 4:4.5.2-1ubuntu3 |         natty | amd64, armel, i386, powerpc
            gcc | 4:4.6.1-2ubuntu5 |       oneiric | amd64, armel, i386, powerpc
            gcc | 4:4.6.3-1ubuntu5 |       precise | amd64, armel, armhf, i386, powerpc
            gcc | 4:4.7.0-5ubuntu1 |       quantal | amd64, armel, armhf, i386, powerpc
  3. Install a package

     $ sudo apt-get install g++-4.4
  4. Check contents of an installed package

     $ sudo apt-get install apt-file
     $ apt-file search g++-4.4
     distcc: /usr/lib/distcc/g++-4.4
     distcc: /usr/lib/distcc/x86_64-linux-gnu-g++-4.4
     g++-4.4: /usr/bin/g++-4.4
     g++-4.4: /usr/bin/x86_64-linux-gnu-g++-4.4
     g++-4.4: /usr/share/doc/g++-4.4
     g++-4.4: /usr/share/man/man1/g++-4.4.1.gz
     g++-4.4: /usr/share/man/man1/x86_64-linux-gnu-g++-4.4.1.gz
     g++-4.4-arm-linux-gnueabi: /usr/bin/arm-linux-gnueabi-g++-4.4
     g++-4.4-arm-linux-gnueabi: /usr/share/doc/g++-4.4-arm-linux-gnueabi
     g++-4.4-arm-linux-gnueabi: /usr/share/man/man1/arm-linux-gnueabi-g++-4.4.1.gz
     g++-4.4-multilib: /usr/share/doc/g++-4.4-multilib
     hardening-wrapper: /usr/bin/g++-4.4
  5. update-alternatives: choose default package version


  # 1. Set `/usr/bin/gcc` to be version 4.4
  $ sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.4 20
  update-alternatives: using /usr/bin/gcc-4.4 to provide /usr/bin/gcc (gcc) in auto mode.

  # 2. `gcc-4.5` has priority 10 which is lower than `gcc-4.4`
  $ sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.5 10

  # 3. Configure alternatives
  $ sudo update-alternatives --config gcc
  There are 2 choices for the alternative gcc (providing /usr/bin/gcc).

    Selection    Path              Priority   Status
  * 0            /usr/bin/gcc-4.4   20        auto mode
    1            /usr/bin/gcc-4.4   20        manual mode
    2            /usr/bin/gcc-4.5   10        manual mode

  Press enter to keep the current choice[*], or type selection number:




How to fix the “Cannot retrieve repository metadata (repomd.xml)” error in Fedora?

Installing older software

$ yum downgrade <pkg>

[I]t is possible to install alternate versions of gcc on Fedora. Just not from packages -- you'll need the source, available from Look to download gcc-4.5.3.tar.gz from one of the download mirrors.

Download and unpack the gcc source tarball. Make sure your Fedora 16 has the packages necessary for building:

    $ yum install gcc mpfr-devel libmpc libmpc-devel glibc-devel

Then create a new, empty build directory and build gcc with a suffix of 45 -- you'll build compilers gcc45 and g++45 for example. You might want a new, separate install directory like /usr/local/gcc45/

    $ ${GCC}/configure --prefix=/usr/local --program-suffix=45 --enable-languages=c,c++
    $ make
    $ sudo make install

Failed to fetch <PACKAGE> Hash Sum mismatch

  $ sudo apt-get clean

You could try deleting and reloading the package lists:

  $ sudo rm -rf /var/lib/apt/lists/* 
  $ sudo apt-get update

Change site mirror:

  $ sudo vi /etc/apt/sources.list
  $ sudo apt-get update
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