Hello all... I have a Ultra 60 that that is used for connecting a large Xerox printer to the network. This computer takes PDF's and converts them to tiffs and sends them back to a pc :p . In order to transfer data back and forth a mount is manually performed on the UNIX box. The mount of course is... (1 Reply)
Hi,
Could anyone give me a idea how to strip the lines from a given file. example
***********
1st occurence
1st occurence
1st occurence
1st occurence
***********
2nd occurence
2nd occurence
2nd occurence
2nd occurence
2nd occurence
2nd occurence
*************
3rd occurence
3rd... (10 Replies)
Hello Everyone
I am new to this forum.
I am having a requirement to edit the file(the file is having some sql code).
And this file is in my colleagues login. This is readonly
Now I would like to edit this file.
In which way can I do this? (1 Reply)
Hallo Friends,
I have written a script which goes through different directories deleting files but I think there is a shorter way I can do this please help.
#!/bin/ksh
#set -x
cd /minotaur/Data/CFD_Input/E_CIF
cd 051
for files in 2008*
do
rm -rf $file
done
#
cd ../052
for... (3 Replies)
I have a file oratab with entry like this
SCADAG:/esitst1/oracle/product/9.2.0.8:Y
I am trying to discover a way to change the 9.2.0.8 part of this to something like 10.2.0.4 as part of an upgrade script.
I have tried
cat /etc/oratab >>/tmp/oratab... (1 Reply)
I created a file system earth in /earthpool (zpool). I mounted the file system on a directory /earth. But, when I reboot my machine it doesn't load the file systems and the zpool and zfs shows no pools available and no datasets respectively. I am using Solaris 10 running on X4500. Could you... (5 Replies)
Please help!
I have installed 5 Linux OS in the following order:
1st : OpenSUSE 11.0
2nd : Ubuntu 8.4
3rd : Ubuntu 8.10
4th : OpenSUSE 11.1
5th : Fedora 10
Here is the scenario, at the 4th installation i can still choose which OS to boot as what OpenSUSE grub displays. Now, after... (3 Replies)
looking for a script or command to push out from a centralized machine to multiple machines. I have the software in place that will do this already, but I need to tell it what command to run on each machine with this file.
what I need is a script or command to edit a file in a specific manner.... (13 Replies)
Hi everyone , i am new in shell scripting and i want to do a simple job.
A have in a file a text that looks like :
4770 maniac 20 0 13680 312 240 S 0.0 0.0 0:00.00 pro 4770 maniac 20 0 23448 312 240 S 0.0 0.0 0:00.00 pro 4770 maniac 20 0 33216 312 240 S 0.0 0.0 0:00.00 pro
and i want to... (2 Replies)
Discussion started by: pcmaniac
2 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)