lpf23

http://virtualboxes.org/doc/installing-guest-additions-on-debian/

Follow these steps to install the Guest Additions on your Debian virtual machine:

1) Login as root;
2) Update your APT database with apt-get update;
3) Install the latest security updates with apt-get upgrade;
4) Install required packages with apt-get install build-essential module-assistant;
5) Configure your system for building kernel modules by running m-a prepare;
6) Click on Install Guest Additions… from the Devices menu, then run mount /media/cdrom.

lpf23

var digits = Math.floor(Math.random() * 9000000000) + 1000000000;

lpf23

Show all files:
$ defaults write com.apple.finder AppleShowAllFiles -boolean true
$ killall Finder

Hide the hidden files again:
$ defaults delete com.apple.finder AppleShowAllFiles
$ killall Finder