Earlier, you populated the foo directory with several .lgs files. If you like, you can compile a test page:
> lgc test.lgs
During verification, lots of features of the evaluation engine are checked. You can also compile a test machine:
> lgc testmachine.lgs
After compilation, invoke the machine:
> testmachine/page/bin/test1
It just prints 'HelloWorld'. Finally compile the lgc compiler itself:
> lgc lgc.lgs
After compilation, invoke the compiler
> lgc/page/bin/lgc --version
You may also see if there are any differences between /usr/bin/lgc and lgc/page/bin/lgc:
> diff /usr/bin/lgc lgc/page/bin/lgc
Chances are there are no differences.