Install Git without Install Xcode on OS X

alias git="/usr/local/git/bin/git"

Setup Apache & PHP for Apple OS X 10.9 Mavericks

Check installed version of Apache, open up Terminal and type

httpd -v

Start Apache, open up Terminal and type

sudo apachectl start

Stop Apache, open up Terminal and type

sudo apachectl stop

Enable PHP, open up Terminal and type

sudo vi /etc/apache2/httpd.conf

Uncomment LoadModule statement php5_module

LoadModule php5_module libexec/apache2/libphp5.so

Restart Apache, open up Terminal and Type

sudo apachectl restart

Secure Google Gmail

Google has increased its security measures to block access to Google accounts after July 15, 2014 if those accounts are being set up or synced in apps and on devices that use Basic Authentication. You may disallow less secure apps via Google's "Allow less secure apps" settings page.

https://www.google.com/settings/security/lesssecureapps

Disable Safari from automatically uncompressing / unzipping downloaded file

Open Safari
Safari -> Preferences... -> General
Uncheck Open "safe" files after downloading

Change iMessage Picture / Icon

Messages -> Change My Picture...

OS X: Partition or Resizing Error / Partition failed with the error: Couldn’t modify partition map because file system verification failed.

Shutdown

Start system into Single User Mode by holding Command+S during boot

At the command prompt, type:
/sbin/fsck -fy then ENTER

When fsck is complete, type “exit” to restart

Start system and verify disk using Disk Utility

Uninstall OS X EnterpriseDB PostgreSQL 9.1

Open a terminal window via Applications->Utilities->Terminal 

open /Library/PostgreSQL/9.1/uninstall-postgresql.app
sudo rm -rf /Library/PostgreSQL 
sudo rm /etc/postgres-reg.ini

Open User & Groups via System Preferences -> Users & Groups and delete PostgreSQL user