Just think me as a kid. When i run the below script, it really print 1(not as your comment).

phillip@athens:/tmp$ perl -e 'use IO::Handle;print 1;'

And thanks for the reply(Re^3: ztk-webcam snapshot-grabber), I find "$_" mean in http://perldoc.perl.org/perlvar.html. Is its printing "1" caused by there's nothing to be flush in buffer?

In reply to Re^4: ztk-webcam snapshot-grabber by PhillipHuang
in thread ztk-webcam snapshot-grabber by zentara

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