somekool@somekool-laptop:~/coding/prj99$ cat test1.xx
#!/home/somekool/coding/prj99/rbprj99.rb

[].size

somekool@somekool-laptop:~/coding/prj99$ cat rbprj99.rb
#!/usr/bin/ruby


somekool@somekool-laptop:~/coding/prj99$ ./rbprj99.rb
somekool@somekool-laptop:~/coding/prj99$ echo $?
0
somekool@somekool-laptop:~/coding/prj99$ ./test1.xx
./test1.sas: line 12: [].size: command not found
somekool@somekool-laptop:~/coding/prj99$