open (DB, "+<test.db");

truncate (DB, 1024);

close DB;



1. This truncate the file from bottom .......... Is there a way the file can truncated 
from the top?

2. I have DB with 4-8 digits number in each line e.g.

1238483
92933
09983433
093

The truncate function truncates the file very abruptly .... for example the last line 
093 after truncate will be left 0 . 

Is there a way that it should remove the last full line \n? rather leaving 1 or 2 
digits behind.

Thanks for any input,

Sara.






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