After reading the post, I was curious how to do the same thing on OS X.
I knew there was a menu for special characters built into all text inputs, so I searched help for "characters." The first result was Edit->Special Characters, which showed a shortcut of ⌘+⎇+T. I searched the special characters for "lamda" and selected the first result. After that, I figured out how to easily type λ often. You can add a string substitution in System Prefs -> Language & Text -> Text.
No googling. No config files. No restarting X. ♥ My biggest issue was finding the ⌘ symbol, which is classified as "place of interest sign" in the technical symbols category.
There are also ways to convert an X11 compose configuration into Cocoa keyboard shortcuts. Google around. it's not a ton of fun, but it's very doable :)
I knew there was a menu for special characters built into all text inputs, so I searched help for "characters." The first result was Edit->Special Characters, which showed a shortcut of ⌘+⎇+T. I searched the special characters for "lamda" and selected the first result. After that, I figured out how to easily type λ often. You can add a string substitution in System Prefs -> Language & Text -> Text.
No googling. No config files. No restarting X. ♥ My biggest issue was finding the ⌘ symbol, which is classified as "place of interest sign" in the technical symbols category.