i need to grep date in the format year-month-day,,,,,,,
actually i need to grep those dates other than current date..........
can anyone help me in this...........i need a format of date which would grep previous date except current date (1 Reply)
Hi
I have a file which has ascii , binary, binary decimal coded,decimal & hexadecimal data with lot of special characters (like öƒ.ƒ.„İİ¡Š·œƒ.„İİ¡Š· ) in it. I want to standardize the file into ASCII format & later use that as source .
Can any one suggest a way a logic to convert such... (5 Replies)
Hi all,
Does anyone know how to format the output from mysql from within a shell script?
i.e.
RESULT=`mysql command`
echo ${RESULT}
the ${RESULT} only displays the output on one line instead of how mysql would display it as columns etc (3 Replies)
Hi All,
I have created a Unix Shell script whch creates a *.csv file and export it to Excel.
The problem i am facing is that Users wants one of the AMOUNT field in comma separted values. Example :
if the Amount has the value as 3000000 User wants to be in 3,000,000 format.
This Amount format... (2 Replies)
Hi,
I am having couple of files which i used to copy from windows to Linux, so now in case of text files (CTRL^M) appears at end of line. I know i can convert this windows format file to unix format file by running dos2unix.
My requirement here is that i want to do it automatically using a... (5 Replies)
Request if some one could provide me shell script that converts the below "input file" to "CSV format file" given
Name Domain Contact Phone Email Location
----------------------- ------------------------------------------------ ------- ----- ---------------------------------... (7 Replies)
Hi Friends,
Am new to Unix world and this is my first post in this forum.
I was stuck in displaying the content.
while displaying the content the below points to be taken care
1 ) The header format is repeating
2) To display the value in table format... (2 Replies)
Discussion started by: rocky2013
2 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)