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Sleep prevention due to screensavers System
My iMac would never sleep with the sleep options set in Prefs Panel. However, by simply choosing BLACK BASIC in the Screen Savers pref panel, now the iMac spins down HD after 5min and full pulsating sleep after 10min of inactivity. It seems running regular Screen savers keeps the video card busy and interferes with normal operations.. this is a G3 400DV, 320mb RAM, 10gb HD, stock.

[Editor's note: Wish I could help verify this, but I use a SCSI card, so I can't sleep the machine!]
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OS X 10.0.2 update out System
Software Update has just given me the OS X 10.0.2 release, along with iTunes 1.1.1. I haven't had much time to use either package (it's only a lunch HOUR, unfortunately!), but here are a couple quick observations...

1) If you'd like to back up the packages before you lose them (they get deleted on restart), open a terminal and
cd /private/tmp/501
cp -R 10.0.2Update.pkg/ ~/Documents/newname
cp -R iTunes.pkg/ ~/Documents/newname2
Of course, you can use any destination and name you like, and you need to do this after the packages have installed but before you select restart in the installer.

2) iTunes now has a dockling that includes "Bring to front", "Quit", "Play", "Stop", "Pause", "Next Song", and "Previous Song" (or "Open iTunes" if it's not running). It also runs visuals full screen, and (of course) includes burning!

3) From looking through the installer files (after install, run the installer package in /Library/Receipts, proceed to the "Select Destination" step, then under the File menu, pick Show Files; quit the installer when done reading) it appears that there were updates to mail.app, the login panel, audio drivers, and a whole slew of other drivers (including possbily SCSI?).

The updates are available through the Software Update panel in OS X, and as standalone downloads from Apple.
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Security alert for 'sudo' System
Today over at stepwise.com, they posted an article explaining a buffer overrun security hole in 'sudo', which is included with OS X. After you've read the article, you can either download an updated sudo installer, or build it yourself by doing the following in a terminal window (requires an admin account and the developer tools installed):
mkdir build-sudo
cd build-sudo
wget http://www.courtesan.com/sudo/dist/sudo-1.6.3p7.tar.gz
gnutar -xzf sudo-1.6.3p7.tar.gz
cd sudo-1.6.3p7
cp /usr/libexec/config.* ./
./configure --with-password-timeout=0
--mandir=/usr/share/man
--prefix=/usr
make
sudo make install
This update is highly recommended for all users, but especially those with a full-time internet connection and no firewall! ;-)
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Use old system sounds in X System
If you'd like to take some of your old System 9 alert sounds and use them in OS X, it's apparently fairly easy. I had this snipped from somewhere, and never got around to posting it. I have NOT tried this on my machine (haven't been in OS 9 lately!), so use at your own risk (but it doesn't look too dangerous).

Simply boot into OS 9.1, run the desired sound through a sound conversion program (perhaps Sound Converter Pro) to make it an AIFF format, and then drop it the into /System/Library/Sounds folder. When you reboot into OS X, the sounds should be available.
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Empty all trash cans at once System
Being inherently multi-user, OS X creates a trash can for each user. There's no simple (GUI) way to empty all of these trash cans. Even if you're logged in as root, you have to remove each one individually. Over in this MacNN forum, however, 'MickS' posted a one-line terminal command that will empty all of your trash cans at once. Warning - this is not un-doable, and you won't get any 'Are you sure?' messages before the trash is emptied.

To empty all the system trash cans at once, start a terminal session and type
sudo find / -name ".Trash" -type d -print | xargs rm -fr
You'll have to enter your admin password, but then it should just run. NOTE: I have not tried this myself yet, so use at your own risk.
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Run an AppleScript from the command line System
Want to run an AppleScript command real quick from Terminal? It's easy!

1. Run "osascript".
2. Type your script, for example:
tell application "Dock" to quit

launch application "Dock"
3. Type Control-D when done.

You can also supply a filename to "osascript" to run the script inside, and you can compile—but not run—script files using "osacompile".
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Can't find Classic on 10.0.1 System
Background first: These symptoms did not occur until I updated to OS X 10.0.1.

I'm working on a iBook 466/192MB - OS X 10.0.1 and 9.1 on a single partition.

When I select OS X in the Startup Disk Control Panel (while in OS 9.1) I am warned that there is no system folder selected and that unpredictable things may happen.

If I reboot, OS X boots fine. Selecting Classic in the System Preferences provokes the notice that there is no MacOS 9.1 or later installed anywhere (I've got three now) so Classic cannot start. I've reinstalled OS X (& the update - 10.0.1), reinstalled 9.1 and rebuilt the desktop (in 9.1, not Classic). I can still select OS 9.1 as the startup disk from System Preferences.

I'm at a loss here. I need Classic to run some everyday stuff. Any ideas?
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Understanding the OS X architecture System
I would normally just post this as a 'link', but it seems a bit more important than that. If you're having trouble understanding the "language of X" (Carbon, Cocoa, Classic, Quartz, etc), Apple has put up an incredibly easy-to-understand one-page snapshot of the whole system.

http://developer.apple.com/macosx/architecture/

This really helps visuall lay out the structure of X, and explains all those buzzwords you've been hearing lately (mouse over each button for the details). I found the link in one of the MacNN discussion boards, posted by 'StarfleetX' .
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New 'Introduction to OS X Guide' available System
Over the weekend, I decided to take some of the more general tips from the site and combine them into a more formal document designed to help people get started with OS X. To test OS X as a truly usable OS, I decided to do the entire project with only native apps. So, using primarily AppleWorks, Graphic Converter, Grab, OmniWeb, and Preview, I created a nine-page introductory tips document for new OS X users. The general idea is to help someone understand the OS, and perhaps start using it productively more quickly than if they stumble through on their own. I cover the OS in general, the dock, the Finder including the toolbar, and a few key apps.

There's nothing in the document that hasn't been published here, except for the section covering how I use the desktop and toolbar. So if you read here regularly, you probably won't find any new information - but perhaps it will help someone you know who is just starting the transition. I didn't try to cover everything, and the UNIX-related content is intentionally kept at minimal to none. The guide is strictly targeted at the OS X user transitioning from OS 9.

To keep the load off the macosxhints server, the file is available on my mac.com homepage. It's a PDF file about 1.1mb in size, and you can find it here:

http://homepage.mac.com/rgriff/

Take a look, and feel free to email me corrections, comments, or additions.
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View the Help index System
If you select Help from the Finder, and then Mac Help (the only choice), you get the standard "What is your question?" box, with a few blurbs about OS X. However, I noticed tonight that the "back" arrow is lit, which seemed odd given that I'd just opened Help.

If you click Back, you'll be taken to the Help Center screen, which shows all the help files that have been installed on your machine. On my box, for example, I see BBEdit Help, DragThing Help, and the Developer Help Center (which I never knew was there!). From there, clicking on any one of them takes you to that appplication's help files without opening the application first.
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