Re: Lua as replacement for Bash scripting

[Alexander Gladysh <agladysh@...>]

On Tue, Jul 6, 2010 at 21:10, Hisham <hisham.hm@gmail.com> wrote:
> On Tue, Jul 6, 2010 at 6:52 AM, Jerome Vuarand <jerome.vuarand@gmail.com> wrote:
>> 2010/7/6 Alexander Gladysh <agladysh@gmail.com>:
>>>> What you can do is introduce some helper code to run external
>>>> utilities more easily. For example you could put a __index hook on _G
>>>> (or a module), that would check if a command line utility with the
>>>> given key exist in the path, and would wrap a call to io.popen in a
>>>> Lua function, with proper whitespace escaping. For example you could
>>>> then write :

>>>> local files = find('.', '-name' '*foo*')
>>>> for _,file in files:match('[^\n]+') do
>>>>    print(stat('%n is a %F', file))
>>>> end

>>>> Where find and stat are wrappers for the command line tools.

>>> That's a nice idea!

>>> I would put such hook into a separate table though — to avoid name clashes.

> That seems to be what Peter Odding's shell.lua does.

You're right. I've missed that, sorry :-)

However, I'd use a clean table for this. Peter's one still prone to
name clashes, I think.

Alexander.