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List, I ran into some issues testing for os.execute() results. So I wrote some test code and executed it on Windows and Ubuntu 10. The code is run twice, once running os.execute, once with penlights execute method. Test code: https://github.com/Tieske/exit_test/tree/f824170650139e906fbfb83febe311a1a87ef93c The results (see below) are what I expected for Windows. But on Ubuntu, I can’t explain it. The exitcodes are supposed to be between 0 and 255. So the os.exit(-5) and os.exit(400) are out of range, but the valid test; os.exit(25) also gives me a return value in os.execute() of 6400. The windows one (further down below) just handles any numeric argument, also outside the 0-255 range. Any clues to why this is happening? Regards Thijs The Ubuntu output: thijs@ubuntu:~/exit_test$ lua exit_test.lua ====> PLAIN <==== testing shell command (always success) (dir) #:1 1: 0 testing non-existing command (always failure) (this_obviously_does_not_exist) #:1 1: 32512 testing os.exit(25) exitcode (lua _exitcode.lua 25) #:1 1: 6400 testing os.exit(-5) exitcode (lua _exitcode.lua -5) #:1 1: 64256 testing os.exit(400) exitcode (lua _exitcode.lua 400) #:1 1: 36864 testing erroneous script (lua _exiterror.lua) #:1 1: 256 ====> PENLIGHT <==== testing shell command (always success) (dir) #:2 1: true 2: 0 testing non-existing command (always failure) (this_obviously_does_not_exist) #:2 1: false 2: 32512 testing os.exit(25) exitcode (lua _exitcode.lua 25) #:2 1: false 2: 6400 testing os.exit(-5) exitcode (lua _exitcode.lua -5) #:2 1: false 2: 64256 testing os.exit(400) exitcode (lua _exitcode.lua 400) #:2 1: false 2: 36864 testing erroneous script (lua _exiterror.lua) #:2 1: false 2: 256 thijs@ubuntu:~/exit_test$ And on Windows: C:\Users\Thijs\Dropbox\Lua projects\exit_test>exit_test.lua ====> PLAIN <==== testing shell command (always success) (dir) #:1 1: 0 testing non-existing command (always failure) (this_obviously_does_not_exist) #:1 1: 1 testing os.exit(25) exitcode (lua _exitcode.lua 25) #:1 1: 25 testing os.exit(-5) exitcode (lua _exitcode.lua -5) #:1 1: -5 testing os.exit(400) exitcode (lua _exitcode.lua 400) #:1 1: 400 testing erroneous script (lua _exiterror.lua) #:1 1: 1 ====> PENLIGHT <==== testing shell command (always success) (dir) #:2 1: true 2: 0 testing non-existing command (always failure) (this_obviously_does_not_exist) #:2 1: false 2: 1 testing os.exit(25) exitcode (lua _exitcode.lua 25) #:2 1: false 2: 25 testing os.exit(-5) exitcode (lua _exitcode.lua -5) #:2 1: false 2: -5 testing os.exit(400) exitcode (lua _exitcode.lua 400) #:2 1: false 2: 400 testing erroneous script (lua _exiterror.lua) #:2 1: false 2: 1 C:\Users\Thijs\Dropbox\Lua projects\exit_test> |