install LAMP (Apache - mysql - php) on Ubuntu

sudo apt-get install apache2

sudo apt-get install php5

sudo apt-get install mysql-server-5.0

sudo apt-get install libapache2-mod-php5

sudo /etc/init.d/apache2 restart

show / unshow all files in Finder - OSX

with the command, from the Terminal:

defaults write com.apple.finder AppleShowAllFiles [ TRUE | FALSE ]

and restarting Finder (note the upcase)

killall Finder

Finder will show/unshow all the hidden files