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6.4.8. Output from System Calls


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Written by
Eric Cholet (Logilune)
and Stas Bekman (StasoSphere).

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The output of system( ), exec( ), and open(PIPE,"|program") calls will not be sent to the browser unless Perl was configured with sfio. To learn if your version of Perl is sfio-enabled, look at the output of the perl -V command for the useperlio and d_sfio strings.

You can use backticks as a possible workaround:

print `command here`;

But this technique has very poor performance, since it forks a new process. See the discussion about forking in Chapter 10.

 

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