I have a data file:
abc Text Text Text Unique Text
123 Text word Line Unique Text
fgh Text data Line Unique Text
789 Text Text Line Unique Text
543 Text Text Data Unique Text
and a filter file
123
789
I want to extract out from the data file the two records that contain the keys... (1 Reply)
hi all,
I have this file with some user data.
example:
$cat myfile.txt
FName|LName|Gender|Company|Branch|Bday|Salary|Age
aaaa|bbbb|male|cccc|dddd|19900814|15000|20|
eeee|asdg|male|gggg|ksgu|19911216|||
aara|bdbm|male|kkkk|acke|19931018||23|
asad|kfjg|male|kkkc|gkgg|19921213|14000|24|... (4 Replies)
i have file server 1 (filesvr01acess.log) and disc server 1 (discsvr01acess.log) in unix box(say ip adress of the box 10.39.66.81)
Similiarly i have file server 2 (filesvr01acess.log) and disc server 2(discsvr01acess.log) in another unix box(say ip adress of the box 10.39.66.82).
Now my... (1 Reply)
Hi All ,
I have one file like below ,
Owner name = abu2-kxy-m29.hegen.app
Item_id = AX1981, special_id = *NULL*, version = 1
Created = 09/01/2010 12:56:56 (1283389016)
Enddate = 03/31/2011 00:00:00 (1301554800)
From the above file I need to get the output in the below format ,i need... (3 Replies)
Hi,
I have a file with hundreds of records.
There are four fields on each line, separated by semicolons.
Name
Height (meters)
Country
Continent (Africa,Asia,Europe,North America,Oceania,South
America,The Poles)
I need to Write the command to find display how many mountains appear... (1 Reply)
I have a .kml file. So I want filter the .kml to get only the tags that have this numeric codes that they are in a text file
11951
11952
74014
11964
11965
11969
11970
11971
11972
60149
74018
74023
86378
11976
11980
11983
11984
11987 (5 Replies)
Hi...
I would like to filter out my data file....in two different way
1st way is like this, I will take one example..here...
The script should ask like this.
Enter min value in first column
Enter max value in first column
Enter min value in second column
Enter max value in... (5 Replies)
Hello,
I am very now to this, hope you can help,
I am looking into editing a file in Solaris, with dinamic collums (lenght varies) and I need 2 things to be made, the fist is to filter the first column and third column from the file bellow file.txt, and create a new file with the 2 filtered... (8 Replies)
Hi Folks,
I have a text file with lots of rows with duplicates in the first column, i want to filter out records based on filter columns in a different filter text file.
bash scripting is what i need.
Data.txt
Name OrderID Quantity
Sam 123 300
Jay 342 498
Kev 78 2500
Sam 420 50
Vic 10... (3 Replies)
Discussion started by: tech_frk
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)