I am having problems running the executable created after compiling a simple c program. The code compiles no problem, but when I type "a.out" which is the output file resulting from my program compilation, the prompt says, "command not found". This seems to work on my normal solaris account. The problem is that I would like to compile programs in the train without an internet connection. I can use my Max OSX terminal to get a unix prompt, but it is not currently working due to this problem. I am using mac os X terminal with a recent instillation of xcode I know this may seem like a simple question and I hope there is a simple solution. Please excuse my english as I am new to the country. reply to zach@xxxxxxxxxxxxxxx thank you in advance Zach Lawryk