Apple OS X
VNC over SSH
Sometimes it is useful to manage a Linux server remotely using VNC. A simple and secure method for doing so is to tunnel the VNC connection using Secure Shell. The following instructions have been tested on Redhat Enterprise Linux 5 AS.
On the server side:
First, we need to ensure the vncserver is actually running. [...]
Flush DNS Cache
You can clear the DNS cache on OS X by entering the following command at the shell prompt.
lookupd -flushcache
On a windows 2000/XP/2003 system you would type the following from a command prompt.
ipconfig /flushdns
Widgets on the Desktop
Sometimes you may want to display widgets on your regular desktop, rather than accessing them through Dashboard. Thankfully, achieving this is pretty easy. Type the followin in a Terminal window:
defaults write com.apple.dashboard devmode YES
Log out of your session, and then login again to restart the Dashboard process. That’s it! You now have the capability of [...]
Eject CD from Open Firmware
Turn the power on with the power button and hold Command-Option-O-F — this will boot you into open firmware. Now type eject cd and wait until the CD pops out. Type mac-boot to reboot.