The first thing that loads in OS X is the kernel. The kernel is how users interface with hardware and sets the stage for interaction by probing for each driver that needs to be loaded and tracking what is found. The presence of everything about the system is tracked when the kernel loads as well as pertinent boot parameters. Even if you’re booting in verbose mode, most of this probably happens too fast to notice. You might be able to pause it, but you’re still trying to react to things too quickly in many cases. That’s where the dmesg command comes into play, which lets you review and control the…
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LoginHook Bonjour
Want users to be able to use Bonjour at home without having their systems registering with Bonjour when they’re on your network? Many environments have taken to wholesale disabling Bonjour. This can be done by augmenting the LaunchDaemon that invokes Bonjour, com.apple.mDNSResponder.plist that is located at /System/Library/LaunchDaemons. You add a -NoMulticastAdvertisements to the ProgramArguments array. This can be done with the defaults command as so: defaults write /System/Library/LaunchDaemons/com.apple.mDNSResponder ProgramArguments -array-add “-NoMulticastAdvertisements” This can then be undone by writing the contents you want back into the array without the -NoMulticastAdvertisements: defaults write /System/Library/LaunchDaemons/com.apple.mDNSResponder ProgramArguments -array /usr/sbin/mDNSResponder -launchd This is somewhat well documented, initially appearing as an Apple kbase article. However, we…
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Backing Up and Restoring Subversion
To make a Subversion backup (replacing /repositorypath with your actual repository path and /repositoryname.dump with the path and name of the file you would like to export your repository into): svnadmin dump /repositorypath > /repositoryname.dump To then restore the Subversion backup (replacing /repositorypath with your actual repository path and /repositoryname.dump with the path and name of the file you would like to export your repository into): svnadmin load /repositorypath < /repositoryname.dump