objective-m is an unstable and buggy and primitive implementation of message-passing and object-oriented programming pionered by smalltalk and Io. In other words, it means that everything (including conditionals and looping) is done through message-passing.

objective-m is written in pure ISO C++0x, so it shall compile fine on unix/linux. To build the shell run:

cd src && make
bin/objm

Read something from the user, convert it to an atom, and doing some comparisons with it.

[yourname =: [IO readline]]
[Func ifelse: [yourname ==: @"ayrtoni"],
              [@"ayrtoni mentioned" println],
              {
                [@"Some dude " print];
                [yourname println]
              }]