The tftpd-server is included in Mac OS X but is not loaded by default.
The configuration-file is found in the LaunchDaemons directory /System/Library/LaunchDaemons/tftp.plist.
I’ll step through the whole process to get the TFTPd server up and running.

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This guide will step you through the process of securing your ssh keys while avoiding re-entry of your passphrase every time you use the key.

New in 10.4 is a system daemon called launchd. Launchd is Apple's replacement for a number of *NIX daemons that are typically used for launching system services at boot time or on demand after system launch. Launchd, although a work in progress, is extremely powerful. Process ID 1 in the system is in fact launchd. It's always running, and always watching.

defaults write com.apple.dock mouse-over-hilte-stack -boolean YES killall Dock