Re: Strange interaction with the OS

[Jose Torre-Bueno <jtorrebueno@...>]

On May 29, 2013, at 11:14 PM, steve donovan <steve.j.donovan@gmail.com> wrote:

This is exactly the difference between os.execute running on Lua 5.2 (returns 'nil exit 1') and Lua 5.1 (returns '256')

Check your versions (_VERSION) and you will see...

Thank you that is exactly the problem.  Adding a printout of _VERSION gives:

> dofile'testr'

Lua 5.2

Is there a shell?   true

ls: NOSUCHFILE: No such file or directory

Check for a non existent file gives: nil exit 1

> os.execute'testr'

Lua 5.1

Is there a shell?   1

ls: NOSUCHFILE: No such file or directory

Check for a non existent file gives: 256

> 

I do have both versions installed.  Now I have to figure out what it is about my environment and path that starts 5.2 as the interpreter but 5.1 when I run something.

Jose Torre-Bueno Ph.D.

Empowered Energy Solutions
(858) 292-6100 

(619) 977-0553 (cell)

CA Contractor B. 932346
jtorrebueno@empoweredenergysolutions.com
www.empoweredenergysolutions.com