"mono --version" and "mcs --version" return the version of the Mono distribution.

Mono C# compiling can be done for following following runtimes

• mcs: compiler to target 1.1 runtime.
• gmcs: compiler to target the 2.0 runtime.

To create a dynamic library using the gmcs just use the following command.

"gmcs -t:library -out:sss.dll -recurse:Com.test.foo.SSL\*.cs"

To execute the compiled exes use the following command.
"mono foo.exe "

To compile with gtk# for UIs use the following command.
mcs -pkg:gtk-sharp-2.0 -recurse:Com.test.foo.SSL\*.cs