# fork returns the child process's process ID in the parent, but nil in the child process
# You can use this to determine which process a script is in.
# forks the current process into two processes, and only executes the exec command within the child process (the process generated by the fork):
if fork.nil?
exec "ruby some_other_file.rb"
end
puts "This Ruby script now runs alongside some_other_file.rb"
|