Alexander Murmann's blog
Helps
Disappearing SSH keys between bash sessions
Using ssh-add will make a ssh key available for a bash session. However, on our new OS X images the key will not be available in new bash sessions and has to be re-added. It was suggested to check the ssh-config to see if something is resetting the key.
Interesting
MySQL gem on Ubuntu box
Compiling the mysql gem fails on an Ubuntu production box:
ERROR: Error installing mysql:
ERROR: Failed to build gem native extension.
If you first install libmysql-rubyand libmysqlclient-dev you will be able to install the mysql gem as usually.