Hi
I have two files and their names are donotcall.txt, filter_it.txt. I want output.txt file with all data that is in filter_it.txt file but not in donotcall.txt. Can anybody help me to write 1-2 lines unix code for this.
donotcall.txt contains following data. Each row represent phone... (3 Replies)
Hi All
We have got a text file, which has data dumped from 60 tables.
From these 60 tables of data we need data from 4 tables only.
I tried assigning line numbers to filter out data, but it is not working as intended.
below is the sample file
----Table1-----
3,dfs,43,df
4,sd,5,edd... (18 Replies)
Need script....We get sar file sa15 with 7 days data which gets appended.. we want filter and parse the outptu such that we should filter only last 48 hours data and then email it to out team.
we read -- sar -f sa15
Please help me with the script either by use sar itself or even sar and awk... (10 Replies)
Hi,
I have a file with hundreds of records.
There are four fields on each line, separated by semicolons.
Name
Height (meters)
Country
Continent (Africa,Asia,Europe,North America,Oceania,South
America,The Poles)
I need to Write the command to find display how many mountains appear... (1 Reply)
Hi...
I would like to filter out my data file....in two different way
1st way is like this, I will take one example..here...
The script should ask like this.
Enter min value in first column
Enter max value in first column
Enter min value in second column
Enter max value in... (5 Replies)
Hi All,
One of my source file column name RelationshipNumber. I need to filter below mentioned records in RelationshipNumber column.
RelationshipNumber:
S45678
D89763
Y09246579
A91234
If it is available in above mentioned column, then I need to print the entire line from my source... (2 Replies)
I have a file from which I need to filter out certain lines when field 17 is less than sysdate. The file has date in YYYYMMDD HH:MI:SS format.
Sample file is as below:
PRUM,67016800 ,CC ,C1,67016800 ,00,Y,Y,2 ,US,BX,BOX ... (5 Replies)
Hello,
I have a question on how to filter the data on multiple columns. The problem is I have one table with 25 columns, 4500 rows. I need to filter out the data based on some codes like 'XXXX', I have 25 codes to check on that table. My requirement is that which ever row has this code I... (1 Reply)
Discussion started by: sandeep309
1 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)