Hi ,
I have a file with contents as below:
Contract Cancellation Report UARCNCL
LOS CODE DATE REAS TYPE AMOUNT AMOUNT LETTER BY
========= ======= ==== ==== ==== ========= ==== ====
8174739 7641509 1S NONE CRCD 30-JUN-2008 NPAR N .00 .00 CCAN
8678696 8091709 1S NONE DDEB 30-JUN-2008... (14 Replies)
hi all,
i have a select query that gives me the output in the following way...
SYSTYPE
--------------------------------------------------------------------------------
Success Failures Total RFT
---------- ---------- ---------- ----------
TYP
1 0 ... (3 Replies)
How to convert entries in a text file to values in a string?
ex: I have a text file list.txt with following entries :
aaaa
bbbb
cccc
dddd
I want to move the values in the list.txt file to an array (names)
need a small script to do that?
Thanks for your help in advance (3 Replies)
hi...... thanks for allowing me to start a discussion
i am collecting usb usage details of all users and convert it into csv files so that i can export it into some database..
the input text file is as follows:-
USB History Dump
by nabiy (c)2008
(1) --- Kingston DataTraveler 130 USB... (2 Replies)
Hi
I have a requirement to write a script but not sure which is the best way to approach this
I have not worked in sed but I'm aware that its robust for file extraction requirements
I have a scripting task. I already developed the code in perl but the script is taking almost 2 mins for... (5 Replies)
I want to extract IP address, system ID and engine IDs of this file ( marked in red) and put in a csv. E.g.
1.1.1.1, SYSTEMID, 000012345678981123548912
I get these file by running an expect script from solaris.
Here is the text file output of my expect script.
working on 1.1.1.1
SNMP... (5 Replies)
Hi all,
I need to find a way to convert excel file into csv or a text file in linux command. The reason is I have hundreds of files to convert. Another complication is the I need to delete the first 5 lines of the excel file before conversion.
so for instance
input.xls
description of... (6 Replies)
Hi guys,
I have a text file named file1.txt that is formatted like this:
001 , ID , 20000
002 , Name , Brandon
003 , Phone_Number , 616-234-1999
004 , SSNumber , 234-23-234
005 , Model , Toyota
007 , Engine ,V8
008 , GPS , OFF
and I have file2.txt formatted like this:
... (2 Replies)
Hello,
I was working with Machine learning and would like to apply my regression algorithms on binary classification datasets.
So I came across this adult dataset, LIBSVM Data: Classification (Binary Class)
It is a binary dataset, features have values only 1 and 0.
and I wanted to... (4 Replies)
I have input data looks like this which is a part of a csv file
7,1265,76548,"0102:04"
8,1266,76545,"0112:04"
I need to make the output data should look like this and the output data will be part of text file:
7|1265000 |7654899 |A|
8|12660000 |76545999 |B|
The logic behind the... (6 Replies)
Discussion started by: RJG
6 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)