If you get something like:



The following command could help this issue, just copy paste this whole line into your terminal

/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -all s,l,u; killall Finder

1) To add Recent Applications icon to the dock, open Terminal and copy paste following:

defaults write com.apple.dock persistent-others -array-add '{ "tile-data" = { "list-type" = 1; }; "tile-type" = "recents-tile"; }' && killall Dock

Don't forget to check recent Items settings in System Preferences>General

2) To disable windows animation, open Terminal and copy paste following:

defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool NO

The following command pretty useful when you need to get a md5 of specific files e.g. only video files in the current dir.

find * -iname '*.mp4' -exec md5 '{}' \; >output.txt

Does anybody know what '{}' \; means?

In order to hide a folder in Finder, open Terminal and write following:

setfile -a V /path/to/folder

Or

chflags hidden /path/to/folder

To unhide:

setfile -a v /path/to/folder

Or

chflags nohidden /path/to/folder

In order to update "locate" database on OS X, some people suggest to create a symlink:

sudo ln -s /usr/libexec/locate.updatedb /usr/local/bin/updatedb

However, this method can create an erroneous output if you are in directory with a specific permission e.g.

shell-init: error retrieving current directory: getcwd: cannot access parent directories: Permission denied
shell-init: error retrieving current directory: getcwd: cannot access parent directories: Permission denied
shell-init: error retrieving current directory: getcwd: cannot access parent directories: Permission denied
find: .: Permission denied

The better method would be to create a bash script /usr/local/bin/updatedb:

  #!/bin/bash
  pushd . > /dev/null
  cd /usr/libexec
  echo "Updating locate database..."
  sudo ./locate.updatedb
  echo "Updating complete!"
  popd > /dev/null

Make it executable: sudo chmod +x /usr/local/bin/updatedb

Now you can just run «sudo updatedb», in order to update «locate» database.

Hello all!

Recently I've purchased Macbook Air mid 2011, I very like it so far.
However, I've noticed when I'm watching movies or YouTube videos, the fan is spinning really fast, iStats shows me something like about 6400 (!) RPM.
I've tried to use fan controlling apps like smcFanSpeed or Fan Control.
However, both of those apps doesn't allow you to decrease fan speed (probably it's designed that way in order not to burn the laptop in inexperienced user hands)

I'm kinda experienced user, so I took a risk and wrote simple script that allows you to set fan speed manually.
The instructions are pretty easy:
1) Download it setFanSpeed2011.tgz
2) Open the Terminal, go to folder where the file was downloaded
3) Extract it: tar xf setFanSpeed2011.tgz
4) Go to inside extracted folder: cd setFanSpeed2011
5) Run it: sudo ./setFanSpeed XXXX (Where XXXX should be needed RPM)

P.S. When I'm gaming or watching movies, I found that 3600 RPM work for me pretty well, the CPU stays on ~174F (~79C) temperature.
The same temperature as when fan was spinning at 6200 (!) RPM, but now it's not such noisy!
P.P.S Created and tested on OSX Lion 10.7.1

Disclaimer,
Note, I'm not taking any responsibilities if you will burn your laptop by using my tool! Decreasing the fan speed is very dangerous!
Since, if you don't watch the CPU temperature it might be overheated!