The Perl program will continue on the next line of code. But the reason to use back ticks is to easily make the output accessible to the script. So the interpreter *has* to wait for the program to finish so that it knows it has all the out put for the script. If you don't care about output you should use 'system();'
At least, that's what I think. Peter C. -----Original Message----- From: Dean Theophilou [mailto:[EMAIL PROTECTED]] Sent: Tuesday, January 15, 2002 5:13 PM To: Agustin Rivera; Jim Ockers; [EMAIL PROTECTED] Subject: RE: running commands in bkgd Yes, but that doesn't mean that once it finishes it won't continue on to the next line of code, right? Dean Theophilou -----Original Message----- From: Agustin Rivera [mailto:[EMAIL PROTECTED]] Sent: Tuesday, January 15, 2002 5:00 PM To: Dean Theophilou; Jim Ockers; [EMAIL PROTECTED] Subject: Re: running commands in bkgd If you use backticks, Perl is waiting for a return value. Such as $var=`echo bunchofdata`; print $var -- bunchofdata Agustin Rivera Webmaster, Pollstar.com http://www.pollstar.com ----- Original Message ----- From: "Dean Theophilou" <[EMAIL PROTECTED]> To: "Agustin Rivera" <[EMAIL PROTECTED]>; "Jim Ockers" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Tuesday, January 15, 2002 4:29 PM Subject: RE: running commands in bkgd > So what you're saying is that the backticks wait until the process is finished? > I was wondering about that. I know that system() doesn't wait; it fires off the > command and continues on to the next line. > > Dean Theophilou > > > -----Original Message----- > From: Agustin Rivera [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, January 15, 2002 4:26 PM > To: Jim Ockers; [EMAIL PROTECTED] > Subject: Re: running commands in bkgd > > > Use the system command. > > Agustin Rivera > Webmaster, Pollstar.com > http://www.pollstar.com > > > > ----- Original Message ----- > From: "Jim Ockers" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, January 15, 2002 4:24 PM > Subject: running commands in bkgd > > > > > > I'd like to make a perl script that runs queues up jobs. > > > > Using the backticks works well except that if I attempt to run > > something in the background (i.e. `foobar &`) the script pauses until > > the job is complete. > > > > Is this limitation due to the shell rather than perl? > > > > Thanks, > > > > -Jim > > > > > > > > > > -- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > -- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > -- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
