open FILEHANDLE, " +< filename"        or die "Unable to open: $! \n";

truncate FILEHANDLE, $desired_length   or print "Unable to truncate: $
+! \n";

[download]
truncate just sets the filesize of the file opened by handle to whatever you specify; you can use it to remove characters from file as well as increase the filesize.

In reply to Re: How do I pre-extend a file to a specified size by abhishek_akj
in thread How do I pre-extend a file to a specified size by Anonymous Monk

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