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Input/Output
The Read Function

  • The read() function reads a specified number of bytes from a file handle and stores the data in a scalar variable

  • The return value is the number of bytes actually read

      $count = read( FILEHANDLE, SCALAR, LENGTH );

  • For example, here's a very simple "cp" (copy) command 
      open( FROM, "<$ARGV[0]" );
open( TO, ">$ARGV[1]" );
while ( read( FROM, $buf, 512 ) )
{
	print TO $buf;
}