Hi all
I have data in following format:
CSCH74,2007,1,09103,15
CSCH74,2007,10,09103,0
CSCH74,2007,11,09103,0
CSCH74,2007,12,09103,0
CSCH74,2007,2,09103,15
CSCH74,2007,3,09103,194
CSCH74,2007,4,09103,115
CSCH74,2007,5,09103,66
CSCH74,2007,6,09103,0
CSCH74,2007,7,09103,0... (2 Replies)
Hi, all.
I need a shell script which gathers data from a remote XML file and then displays it according to my needs.. I need this for my job due to the fact that I need to keep track price changes of euro, usd, gold, etc.
The XML file I am talking about is located at this page: cnnturk dot... (4 Replies)
Good morning. I have a piece of code that is currently taking multiple files and using the CAT.exe command to combine into one file that is then sorted in reverse order based on the 3rd field of the file, then displayed on screen. I am trying to change this so that the files are being combined into... (4 Replies)
I want to sort like below
Suppose few lines in a file is like this
systemid:ABC messagedestination:batchxpr replytoqname: myca
systemid:BCD messagedestination:realtime replytoqname: myca
systemid:ABC messagedestination:realtime replytoqname: eac
systemid: BCD messagedestination:mqonline... (1 Reply)
Hi,
My Oracle query is returing below o/p
----------------------------------------------------------
Ins trnas value
a lkp1 x
a lkp1 y
b lkp1 a
b lkp2 x
b lkp2 y ... (7 Replies)
I have a file with data records separated by multiple equals signs, as below.
==========
RECORD 1
==========
RECORD 2
DATA LINE
==========
RECORD 3
==========
RECORD 4
DATA LINE
==========
RECORD 5
DATA LINE
==========
I need to filter out all data from this file where the... (2 Replies)
I want to read the log file which was generate from other command . And the output was having multi line in log files for job name and server name. But i need to make all the logs on one line
Source file
07/15/2018 17:02:00 TRANSLOG_1700 Server0005_SQL ... (2 Replies)
Hi,
Can anyone help me for merge the following multi-line log which beginning with a " and line ending with ": into one line.
*****Original Log*****
087;2008-12-06;084403;"mc;;SYHLR6AP1D\LNZW;AD-703;1;12475;SYHLR6AP1B;1.1.1.1;0000000062;HGPDI:MSISDN=12345678,APNID=1,EQOSID=365;... (3 Replies)
Discussion started by: rajeshlinux2010
3 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)