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Full Discussion: Shell script - group by
Top Forums Shell Programming and Scripting Shell script - group by Post 302899956 by baladelaware73 on Friday 2nd of May 2014 03:54:17 PM
Old 05-02-2014
Lightbulb Shell script - group by

Hi,
I have text file as shown below.

Code:
root 25 oracle 25  batch 30  griduser 32 admin 35
root 25 oracle 25  batch 30  griduser 32
oracle 25  batch 30  griduser 32 xuser 45 admin 35

I want to group by based on user name, and the output need to be as below. Not necessary the username to be in order, but group by has to be done based on the username value.

Code:
root 50 oracle 75  batch 90  griduser 64 user 45 admin 70

Please help.
Thanks

---------- Post updated at 03:54 PM ---------- Previous update was at 03:52 PM ----------

typo error, pasting the correct output

Code:
root 50 oracle 75 batch 90 griduser 96 user 45 admin 70


Last edited by Scrutinizer; 05-03-2014 at 03:24 AM.. Reason: CODE tags
 
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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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