Apple released OS X bash Update 1.0 for Mavericks, Mountain Lion and Lion.
This update fixes a security flaw in the bash UNIX shell.
For more information on the security content of this update, see http://support.apple.com/kb/HT1222.
Most Mac users are not effected by this bash security flaw, but it is recommended to apply the patch.
For those who missed the scroll bar in OS X Lion, Mountain Lion and Mavericks (Yosemite too), fear not. Just go to System Preferences > General. Select “Always” on “Show scroll bars” option.
Well, this is one of the frequently asked questions I received from people who upgraded from OS X Snow Leopard to Lion/Mountain Lion/Mavericks.
Someone asked me to change their account and home directory name on their Mac. The solution is pretty simple.
It is all explained in Apple Knowledge Base HT1428.