osx-leopard

How to start/stop/restart launchd services from the command line?

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launchctl(8) is your friend. Just keep in mind that some of the services (sshd for example) are disabled in the configuration file so you will need to use the -w switch when loading them. Here is a sshd example: $ sudo launchctl load -w /System/Library/LaunchDaemons/ssh.plist You can stop the service using the unload subcommand. $ … Read more

What is the “Illegal Instruction: 4” error and why does “-mmacosx-version-min=10.x” fix it?

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From the Apple Developer Forum (account required): “The compiler and linker are capable of using features and performing optimizations that do not work on older OS versions. -mmacosx-version-min tells the tools what OS versions you need to work with, so the tools can disable optimizations that won’t run on those OS versions. If you need to run on older … Read more