Oracle Linux

Setup Yum repository

• Reference - http://public-yum.oracle.com/

Oracle Linux 6

# cd /etc/yum.repos.d
# wget http://public-yum.oracle.com/public-yum-ol6.repo

• Configure to get through proxy

export http_proxy=proxy:portnum

For example, 
export http_proxy=http://wwwproxygate.com:8888

• Install package, for example, gcc.

# yum install gcc

• Yum to download only

* Install download-only plugin first. This will give additional options to yum command.
# yum install yum-downloadonly

* Download the package
# yum update gcc -y --downloadonly --downloaddir=/tmp

Install Guest Addition

• Install all dependencies. You can find the dependencies easily by trying to install the Guest Addition.

# yum install kernel-uek-devel
# cd /media/VBOXADDITIONS_4.1.14_77440
# sh ./VBoxLinuxAdditions.run

• Download directly.

Look for the version you're interested in http://download.virtualbox.org/virtualbox/

wget http://download.virtualbox.org/virtualbox/4.2.6/VBoxGuestAdditions_4.2.6.iso
mount VBoxGuestAdditions_4.2.6.iso -o loop /mnt
cd /mnt
./VBoxLinuxAdditions.run

Shared folder

• Create a shared folder from VBox first, for example, named "downloads".

# cd /media
# mkdir downloads
# mount -t vboxsf downloads downloads
or with options
# mount -t vboxsf -o umask=0022,gid=500,uid=500 downloads downloads
or
# mount.vboxsf downloads downloads

• Reference http://www.oraclenerd.com/2011/03/virtualbox-and-shared-folders.html