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truncate

Perl 5 version 10.1 documentation
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truncate

  • truncate FILEHANDLE,LENGTH

  • truncate EXPR,LENGTH

    Truncates the file opened on FILEHANDLE, or named by EXPR, to the specified length. Produces a fatal error if truncate isn't implemented on your system. Returns true if successful, the undefined value otherwise.

    The behavior is undefined if LENGTH is greater than the length of the file.

    The position in the file of FILEHANDLE is left unchanged. You may want to call seek before writing to the file.