Re: dumb idea(s) (tm)

From: Crist Clark (crist.clarkat_private)
Date: Fri Jun 29 2001 - 11:48:16 PDT

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    Doru Petrescu wrote:
    > 
    > in regards to "Re: Antivirus scanner DoS with zip archives" by "Aycan
    > Irican <aycanat_private>"
    > 
    > let's analize this idea some guy had ... he wanted to create a long file
    > without using disk space to store it ...
    > 
    > $> perl -e 'print "A"x1000000000' | gzip -f | dd of=file1
    >         Out of memory!
    >         0+1 records in
    >         0+1 records out
    > 
    > first, consider removing 'dd' ... try like this:
    
    I think dd(1) is the easiest way to do this,
    
      $ touch bighonkin.file &&
      $ ls -l bighonkin.file
      -rw-r--r--  1 cclark  mis  0 Jun 29 11:45 bighonkin.file
      $ df .
      Filesystem   1K-blocks     Used    Avail Capacity  Mounted on
      /dev/ad0s2e    2421089  1447713   779689    65%    /home
      $ dd if=/dev/zero of=bighonkin.file count=1 seek=1000m
      1+0 records in
      1+0 records out
      512 bytes transferred in 0.000462 secs (1108093 bytes/sec)
      $ ls -l bighonkin.file
      -rw-r--r--  1 cclark  mis  536870912512 Jun 29 11:45 bighonkin.file
      $ df .
      Filesystem   1K-blocks     Used    Avail Capacity  Mounted on
      /dev/ad0s2e    2421089  1447753   779649    65%    /home
    
    -- 
    Crist J. Clark                                Network Security Engineer
    crist.clarkat_private                    Globalstar, L.P.
    (408) 933-4387                                FAX: (408) 933-4926
    
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