How to create a startup script in Snow Leopard?

How to create a startup script in Snow Leopard? I'm new to this so forgive me for asking such a simple question.
Asked by: Guest \| Views: 334

Total answers/comments: 2

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bert [Entry]

"Apple menu->System Preferences...->Accounts->Your Account->Login Items

Click '+' icon at the bottom to add ""synergys"".

OR

Use terminal and edit or create the /etc/rc file (which is what the GUI based instructions above do.)

You should be able to just place the path to synergys and it, save, and should execute on next startup.

UPDATE

based on comment

defaults write com.apple.finder
AppleShowAllFiles TRUE/FALSE

killall Finder (restarts finder after previous command is executed)"

bert [Entry]

"Use the Login Hook :

Use the first method of the Apple Support Page.

sudo defaults write com.apple.loginwindow LoginHook /path/to/script

Do not forget the sudo otherwise it won't work."