11-14-2011
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello guys.
This is the error that i'm getting , once i get the error i have to turn off my server ( is the only way to get it up and running again).
I encreased the size of that table but still getting the same error , is there anything that i can do to stop getting this error.
I will... (0 Replies)
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2. Shell Programming and Scripting
I have requirement:
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3. Shell Programming and Scripting
Hi
I am having three oracle databases running in three different machine. their ip address is different. from one of the DB am able to access both the databases.(means am able to select values and insert values in to tables individually.)
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4. UNIX and Linux Applications
hi there, I am trying to create a stored procedure that i can pass the table name to and it will create a table with that name. but for some reason it creates with what i have defined as the variable name . In the case of the example below it creates a table called 'tname'
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5. UNIX for Dummies Questions & Answers
Hello,
I'm working with putty on Windows 7 professional and I'd like to know if there's a way to gather specific lines from a pre-existing table and make a new table with that information.
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6. Shell Programming and Scripting
I am new to this shell scripting....
I have a file which contains list of users. This files get updated when new user comes into the system.
I want to create script which will give a table containing unique list of users. When I say unique, it means script should match table while parsing... (3 Replies)
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7. UNIX and Linux Applications
hi,
i need to copy one table with data into another table,
right now am using
create table table1 as select * from table2
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8. Shell Programming and Scripting
Hello,
I need some help to reformat this table-by-row to matrix?
infile:
site1 A:o,p,q,r,s,t
site1 C:y,u
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site1 -:x,z
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9. Shell Programming and Scripting
Hello All,
While searching for the question, I found some answers but my implementation is not giving expected output.
I have two files; one is sourcefile, other is named template.
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10. Web Development
Bootstrap is great; but we have had some issues with Bootstrapped <tables> (and legacy <fieldset> elements) showing annoying, wayward lines. I solved that problem today with this simple jQuery in the footer:
<script>
$(function(){
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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)