Hi,
I have a problem where some of the records I need to process have the first address field as something like "10Walpole Street" where obviously I want it to be "10 Walpole Street". I know I need to somehow separate out the integer and probably form a new string variable, but I just don't... (5 Replies)
Below is the format of my file which consist of
1)BSB
2)BSB/ADS
3)CIB
4)CIB/CRH
5)CIB/DCC
6)CIB/EMD
7)CIB/GDSPresentation
8)CIB/HCH
9)CIB/HSM
10)CIB/MCH
11)CIB/RCH
12)COB
13)DCI
14)DIB
15)DIB/H2H
16)DIB/HotelSync
17)DIB/UADBA (11 Replies)
Hey guys,
I have the following text:
1,2,3,4,5,6,'NULL','when',NULL,1,2,0,'NULL'
1,2,3,4,5,6,'NULL','what','NULL',1,2,0,1
I need the same text with the word NULL without commas
u know something like this:
1,2,3,4,5,6,NULL,'when',NULL,1,2,0,NULL
1,2,3,4,5,6,NULL,'what','NULL',1,2,0,1
... (1 Reply)
Hi
Description of input file I have:
-------------------------
1) CSV with double quotes for string fields.
2) Some string fields have Comma as part of field value.
3) Have Duplicate lines
4) Have 200 columns/fields
5) File size is more than 10GB
Description of output file I need:... (4 Replies)
Hi !
input:
111|222|333|aaa|bbb|ccc
999|888|777|nnn|kkk
444|666|555|eee|ttt|ooo|ppp
With awk, I am trying to change the FS "|" to "; " only from the 4th field until the end (the number of fields vary between records).
In order to get:
111|222|333|aaa; bbb; ccc
999|888|777|nnn; kkk... (1 Reply)
Hey,
I'm sure this is answered somewhere but my Googling has turned up nothing. I have a file with data in the following format:
<desription of event> at <time and date>The desription of the event is variable length and hence when the list is displayed it is hard to easily see the date (and... (8 Replies)
I have a .CSV file (file.csv) whose data are all enclosed in double quotes. Sample format of the file is as below:
column1,column2,column3,column4,column5,column6, column7, Column8, Column9, Column10
"12","B000QRIGJ4","4432","string with quotes, and with a comma, and colon: in... (3 Replies)
Using Awk, how can I achieve the following?
I have set of record numbers, for which, I have to replace the nth field with some values, say spaces.
Eg:
Set of Records : 4,9,10,55,89,etc
I have to change the 8th field of all the above set of records to spaces (10 spaces).
Its a delimited... (1 Reply)
In the attached file I am trying to remove all the "" and , (quotes and commas) from $2 and $3 and the "" (quotes) from $4.
I tried the below as a start:
awk -F"|" '{gsub(/\,/,X,$2)} 1' OFS="\t" enhancer.txt > comma.txt
Thank you :). (6 Replies)
I have found this bit of code that nearly does what I want.
Basically 3 input fields, I want to copy t2 to t3 as it's typed but only if t1 contains data AND t3 is empty:
<input type="text" id="t1" />
<input type="text" id="t2" />
<input type="text" id="t3" />
<script> var t2 =... (4 Replies)
Discussion started by: barrydocks
4 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)