Hi
I have a XML file in which data is loaded from a relational table and the column names are tags in the xml file which is shown below.
... (8 Replies)
hi everyone,
I written one script that search all xml files and create one xml file, but I need to remove some duplicate nodes by testing one tag element.
</Datainfo>
<data>
<test>22</test>
<info>sensor value</info>
<sensor>
<sensor value="23"... (0 Replies)
Hello,
I have huge xml files and I need to replace only part of the data within a particular xml tag. This doesnt seem to be as simple as it sounds. I have searched everywhere and couldnt find any solution.
Ex:
In the below case I would like "def" to be replaced by "xyz" only when found in... (8 Replies)
Hi unix Gurus,
I am really new to Unix Scripting. Please help me to create a shell script which reads the xml file and from that i need to fetch a particular information.
For example
<SOURCE BUSINESSNAME ="" DATABASETYPE ="Teradata" DBDNAME ="DWPROD3" DESCRIPTION ="" NAME... (2 Replies)
Hi
I am trying to extract data from within a log file and output format to a new file for further manipulation can someone provide script to do this?
For example I have a file as below and just want to extract all delimited variances of tag 32=* up to the delimiter "|" and output to a new file... (2 Replies)
I want to basically do the below thing. Suppose there is a tag called object1. I want to display an output for all similar tag values under heading of Object 1 and the count of the xmls. Please help
File:
<xml><object1>house</object1><object2>child</object2>... (9 Replies)
In a huge log file (43MB, 43k lines) I am trying to extract data between two tag pairs on same line and export it to a file so I can pull it into Excel for a report.
One Pair is <Text>data I need</Text>
Other pair follows on same line and is <TimeStamp>more data I need</TimeStamp>
I would need... (2 Replies)
I am trying find files in sub dir with certain tags using tag command, and add the period to the beginning. I can't use chflags hidden {} cause it doesn't add period to the beginning of the string for web purpose. So far with my knowledge, I only know mdfind or tag can be used to search files with... (6 Replies)
Discussion started by: Nexeu
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)