Ext3 users - May 2004 - Some bytes removed.

Hi,
I have a 1 GigaByte size file and want to remove some bytes from it.
For this I must follow the next steps:
(1) Create a new file.
(2) Copy into it the bytes I will left from the original file.
(3) Remove the original file. 
(4) Move the new file to be the original file.

The problem with this process is that it uses lot of disk I/O.
Actually only one disk block of the file is modified.
Is there any other way to do that using an ext3 file system ?

Greetings.
---
Carles Xavier Munyoz Bald?
carles at unlimitedmail.org
http://www.unlimitedmail.net/
---

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Carles Xavier Munyoz Bald? schrieb:
| Hi,
| I have a 1 GigaByte size file and want to remove some bytes from it.
| For this I must follow the next steps:
| (1) Create a new file.
| (2) Copy into it the bytes I will left from the original file.
| (3) Remove the original file.
| (4) Move the new file to be the original file.
|
| The problem with this process is that it uses lot of disk I/O.
| Actually only one disk block of the file is modified.
| Is there any other way to do that using an ext3 file system ?

um, use and editor for doing things like this?  *gg*
you'll need a proper editor and lots of RAM anyway....

or try "dd". it can seek to a given block number and then copy out the
bits you want to have.

Christian.

- --
BOFH excuse #120:

we just switched to FDDI.
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