Hmm... no. The first time I tried it, I didn't enter anything - I figured maybe that was the problem. But it does the same thing when I type "ls", "/bin/ls", "ls -l", etc...
Compiling with g++ on an OpenBSD 3.0 box, I get a "Memory Fault", and it dumps core when I try to run a command, like "ls".
The exit value is 139, and gdb reports a "Program received signal SIGSEGV,...