On Mon, Mar 11, 2002 at 06:08:20PM +0000, Edward Avis wrote: > On Mon, 11 Mar 2002, Michael G Schwern wrote: > > > print "Executing $abs\n" if ($trace >= 2); > > $val = `$abs -e "require $ver;" 2>&1`; > > > >Using system() might be tricky because we need the result. > > Result? system() gives you the exit status of the process. You can > capture stdout and stderr with a bit of redirection: > open(OLDERR, '>&STDERR') etc etc. An example of this is included in > perlfunc(1).
Last time I tried something like that it didn't work, unless I was doing something really silly. I was in an airport IIRC.... I was probably doing something silly. > The only safe and portable way to do this is the multi-argument form of > system(). That is guaranteed to work no matter what the shell gets up > to and no matter what weird characters appear in filenames. Apart from > ASCII NUL of course :-). Try It! find_perl() in ExtUtils::Win32 (the code above). Gimme a patch. > It might be a good idea to make the code taint-clean, that makes sure > you track down all places where weird characters in filenames can cause > problems. Which is overkill for an ordinary program, but perhaps > necessary for something cross-platform like MakeMaker. Yes. After that we'll be unifying Gravity and Electromagnetism and then World Peace will be brought about just after supper. :) Take it slow. MakeMaker is a mess and its not even properly tested. -- Michael G. Schwern <[EMAIL PROTECTED]> http://www.pobox.com/~schwern/ Perl Quality Assurance <[EMAIL PROTECTED]> Kwalitee Is Job One Woah, like, did anybody see my watch?
