On Fri, Apr 16, 2004 at 04:42:13PM +0200, Jenda Krynicky wrote: > From: Gary Stainburn <[EMAIL PROTECTED]> > > On Friday 16 Apr 2004 3:00 pm, Jenda Krynicky wrote: > > > > > > And if you want system() start the program and return immediately > > > you just use it like this: > > > > > > system( 1, 'the_program and parameters'); > > > or > > > system( 1, 'the_program', @parameters); > > > > Hi Jenda, > > > > this struck me as odd, so I looked at 'perldoc -f system' and nowhere > > does it mention returning immediately, nor does it mention putting > > anything before the program name. > > Yeah this is an "undocumented feature". Don't really understand why, > because unlike the Unixish > system( 'program params &') > this is actually portable. > > The only place I found this documented are the perlport and > perl56delta and perl561delta manpages. But it is being used in > IPC::Open3, Shell.pm, IO::Pipe and PPM::Installer::Local.pm.
I think that no one is very keen to document it because it seems such a hack, and it would be much nicer to just quietly remove it and replace it with something better. Of course, the longer it stays the less likely this seems. -- Paul Johnson - [EMAIL PROTECTED] http://www.pjcj.net -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
