Re: Create files with specific sizes?

[Eric Bambach <eric@cisu.net>]

On Tuesday 14 December 2004 02:52 am, Khan wrote:
> Hello,
>
> is there any way (some command) that will allow me to create blank files
> with specific sizes, eg 1MB, 5MB, 10MB etc.
>
> TNX

Just for the sake of chipping in...dd supports the K,M,GB suffixes so you 
don't have to remember  odd numbers (1024,2048,3096). You can just write 
dd if=/dev/urandom of=/myfile bs=1M count=1
dd if=/dev/urandom of=/myfile bs=10M count=1
dd if=/dev/urandom of=/myfile bs=5M count=1
dd if=/dev/urandom of=/myfile bs=5G count=1 ;)

Manpage for DD:

The GNU fileutils-4.0 version also allows  the
       following  multiplicative  suffixes  in the specification of blocksizes
       (in bs=, cbs=, ibs=, obs=): M=1048576, G=1073741824, and so on  for  T,
       P,  E,  Z,  Y.   A  `D' suffix makes them decimal: kD=1000, MD=1000000,
       GD=1000000000, etc.  (Note that for ls, df, du the size of  M  etc.  is
       determined by environment variables, but for dd it is fixed.)

HTH!

-- 
----------------------------------------
--EB

> All is fine except that I can reliably "oops" it simply by trying to read
> from /proc/apm (e.g. cat /proc/apm).
> oops output and ksymoops-2.3.4 output is attached.
> Is there anything else I can contribute?

The latitude and longtitude of the bios writers current position, and
a ballistic missile.

                --Alan Cox LKML-December 08,2000 

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