You're trying to run a command on a Unix platform and the shell is complaining that it can't find the file. I'm not sure why you think this is a Perl problem. The problem would be the same no matter what program you were trying to run.

I suggest you check the contents of your path. I suspect that your sysadmin is security conscious and doesn't include the current directory in the default path for users on that server. This is a very good policy. But it means that in order to run a program from the current directory you need to give the path to the program. Usually just ./program_name will suffice.