Fundamental Operations

Read

        read(FH, my($buffer), $length);

• The standard I/O library enables reading by records

  • Data is read a block (4k or 8k) at a time into an internal buffer

  • read and <...> copy data out of the buffer

        $record = <FH>;

Write

        print FH $buffer;

• Note the opposite of read is not write; it's print

Truncate

        truncate FH, $length;
        truncate $filename, $length;

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Copyright © 2003 M. J. Dominus