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Full Discussion: Split fields from a file
Top Forums Shell Programming and Scripting Split fields from a file Post 302915853 by Don Cragun on Friday 5th of September 2014 06:19:32 AM
Old 09-05-2014
Let's be perfectly clear. From your first post:
Quote:
My requirement is to seperate the email id's into 2 groups..
emailid1@blh.com emaild2@blh.com emailid3@blh.com should come in one group and asdf@blah.com should come in another group, so that i can call email functionality twice. Currently, i am using below code to achive this:
So, no matter what may appear in any file somewhere, what you want is:
Code:
group1='emailid1@blh.com emaild2@blh.com emailid3@blh.com'
group2='asdf@blah.com'

or with your changes since then:
Code:
group2='asdf@blh.com'

We all mistakenly assumed that you were trying to read a list of email addresses from a file and split them into groups based on some criteria derived from the addresses themselves. And since you had three addresses ending with "@blh.com" and one address ending with "@blah.com", we all assumed that that was the criteria to be used to determine which group should contain an address.

It could have been that you wanted addresses starting with "a" in one list and addresses starting with "e" in the other list. It could have been that you wanted addresses with a digit before the "@" in one list and addresses with an alphabetic before the "@" in the other list. It could have been that you wanted the 3rd address in one list and the other addresses in the other list. It could have been some other pattern none of us saw.

But, since you just want two lists containing exactly those names, why did you give us the red herring talking about a file containing your list of names??? The file is irrelevant.
 

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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)
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