Hi there, I have the following output,
# raidctl -l
RAID Volume RAID RAID Disk
Volume Type Status Disk Status
------------------------------------------------------
c0t1d0 IM OK c0t1d0 OK
... (4 Replies)
Hi,
I have several files that look like this:
File1.txt
Data1
Data2
Data20
File2.txt
Data1
Data5
Data10
File3.txt
Data1
Data2
Data17
File4.txt (6 Replies)
Hi,
I have one file, say file 1, that has data like below where 19900107 is the date,
19900107 12 144 129 0.7380047
19900108 12 168 129 0.3149017
19900109 12 192 129 3.2766666E-02
... (3 Replies)
Hello. I am sorry if this is a common question but through all my searching, I haven't found an answer which matches what I want to do.
I am looking for a sed command that will parse through a large text file and extract lines that start with specific words (which are repeated throughout the... (4 Replies)
consider the following is the contents of the file
cat 11.sql
drop procedure if exists hoop1 ;
Delimiter $$
CREATE PROCEDURE hoop1(id int)
BEGIN
END
$$
Delimiter ;
.
.
.
.
drop procedure if exists hoop2;
Delimiter $$
CREATE PROCEDURE hoop2(id int)
BEGIN
END
$$ (8 Replies)
I have a table to data which one of the columns include string of text
from within that, I am searching to include few lines but not others
for example I want to to include some combination of word address such as (address.| address? |the address | your address) but not (ip address | email... (17 Replies)
I need help extracting specific lines in a text file. The file looks like this:
POSITION TOTAL-FORCE (eV/Angst)
-----------------------------------------------------------------------------------
1.86126 1.86973 1.86972 ... (14 Replies)
I have a series of csv files in the following format
eg file1
Experiment Name,XYZ_07/28/15,
Specimen Name,Specimen_001,
Tube Name, Control,
Record Date,7/28/2015 14:50,
$OP,XYZYZ,
GUID,abc,
Population,#Events,%Parent
All Events,10500,
P1,10071,95.9
Early Apoptosis,1113,11.1
Late... (6 Replies)
Discussion started by: pawannoel
6 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)