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  1. or download this
    001 use IO::Handle;
002 STDOUT->autoflush;
  2. or download this
     use IO::Handle;     # thousands of lines just for autoflush :-(
  3. or download this
    
sub autoflush (*$) { 
...
autoflush( STDOUT, 1 ); # autoflush on
...
autoflush( STDOUT, 0 ); # autoflush off