I am a computer scientist specializing in building machine learning powered products. I’m currently a machine learning developer at Local Logic.
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Hibernating in OSX Lion
In OSX Lion (might also be the case for older versions to), there is no direct way to hibernate a laptop except running out of battery power. The only available option is sleep, which will wake from memory; so it keeps draining the battery. It is possible to change this default behavior with the utility "pmset".
ReadRestore sparsebundle extended attributes after rsync
If you rsync a sparse bundle disk image to another Mac without the -E flag (or if you copy it to a non Mac system), you will loose the ability to double click on it in the Finder to mount it. This is because the extended attributes telling the Finder the folder is actually a bundle are lost in the transfer.
ReadMake OSX's top behave like Linux's top
OSX's "top" program doesn't quite behave like its Linux counterpart out of the box. For me, the two biggest problems are that processes aren't sorted by CPU usage and the top program itself uses 10% of the CPU because it calculates all sorts of statistics about memory and shared library usage that I personally don't care about.
ReadShrinking sparse bundle images
A sparse bundle image in Mac OS X will grow as you add files to it but never shrink if you remove files inside of it. To reclaim the disk space, you must run the following command.
ReadUseful free Mac apps
I'm a relatively new Mac user so I'm keeping a list of some useful free apps that I'm using on my Mac.
Read