Hi All,
How to remove a box like special character which appears at the end of a string/line/record. I have no clue what this box like special character is. It is transparent square like box. This appears in a .DAT file at the end of header.
I'm to compare a value in header with a parameter.... (16 Replies)
Can any one plse help me writing shell script to removing some special character pattern (like / > -------, / > / > ------- etc....as shown below) from the text file ASAP.
/ > -------
<tag-normalization tag-name="EXECSERVPRODUCT" read-only="false" part="body">
... (3 Replies)
Hello
I've searched here and on the 'net for examples of a script or command line function that will remove the $ character from all file names only that can be done within the directory that contains the file names - which are all html files.
ie, I have a directory that contains html files... (6 Replies)
Hi,
I have a input of the form:
..., word1, word2, word3...
I want out put of the form
word1, word2, word3
I tried echo '..., word1, word2, word3...' | tr -d '...,'
but that takes out the commas in the middle too so I get
word1 word2 word3
but I want the commas in the middle.
... (3 Replies)
Hello
I have this special caracter after retreving rows from sql server:
"....spasses: • Entrem al valort 6050108002811 • El donem..."
I would like a sed command to remove it..or just know it's ascii code in order to replace it into my sql sentence.. Hope some one knows how to do that.... (7 Replies)
I have a file as follows
ATOM 5181 N AMET K 406 12.440 6.552 25.691 0.50 7.37 N
ATOM 5182 CA AMET K 406 13.685 5.798 25.578 0.50 5.87 C
ATOM 5183 C AMET K 406 14.045 5.179 26.909 0.50 5.07 C
ATOM 5184 O MET K... (14 Replies)
Hi Folks,
I have a huge data of the below format
abc #apple 1200 06/23
ghj #orange 1500 06/27
uyt #banana 2300 05/13
efg #vegetable 0700 04/16
After first 3 letters, i have 9 spaces and after fruit there are no specific fixed space, but it varies... (4 Replies)
How to find total number of special character in a column?
I am using awk -f "," '$col_number "*$" {print $col_number}' file.csv|wc -l but its not giving correct output. It's giving output as 1 even though i give no special character?
Please use code tags next time for your code and... (4 Replies)
Hello,
Here is my text data excerpted from the webpage:
input
My target is to get:
What i tried is:
sed 's/.*\(connector\)/1/' input > output
but all characters coming before the word "connector" are deleted which is not good for me.
My question: (9 Replies)
Discussion started by: baris35
9 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)