Hi,
I have some files, with some extra lines in weird characters on the top and bottom of the. I want to get rid of those line. Is there a way I can do that?
example of the input file. I want to get rid of those lines in bold
... (8 Replies)
Hi...
I am quite new to Unix and would like an issue to be resolved.
I have a file in the format below;
4,Reclaim,ECXTEST02,abc123,Harry Potter,5432 6730 0327 5469,0603,,MC,,1200,EUR,sho-001,,1,,,abc123,1223
I would like my output to be as follows;
4,Reclaim,ECXTEST02,abc123,Harry... (4 Replies)
Hi,
I need a help in deleting extra spaces in a text.
I have a huge file, a part of it is :-
3 09/21/08 03:32:07 started undef mino Oracle nmx004.wwdc.numonyx.com Message Text : The Oracle session with the PID 1103 has a CPU time ... (6 Replies)
Hi,
I have a source file as mentioned below: I want to remove all the extra spaces between the fields.
a b--------|sa df-------|3232---|3
sf sa------|afs sdf-----|43-----|33
a b c------|adfsa dsf---|23-32|23
*Here '-' idicates spaces
Now, I want output as below:
a b|sa df|3232|3... (7 Replies)
Hi,
I have a string like this and i want to remove extra spaces that exists between the words.
Here is the sentence.
$string="The small DNA genome of hepadnaviruses is replicated by reverse transcription via an RNA intermediate. This RNA "pregenome" contains ... (2 Replies)
Hi
I am using cat <filename> command in one of my datastage job(Command Activity). It is giving actual value but giving extra line.
Eg: Displayed Output: 1 and showing extraline(Eg: 1
) I had checked even wc -c it is giving one character extra.
If the file contains 11. wc -c says 3. ... (3 Replies)
Guys, I have a file that contains entries like this:
LaxOrdID=19220288<8>
LaxOrdID=19220288
I would like to remove <> and the values inside it anywhere its found.
How? (2 Replies)
HI,
I need the help from the experts like I have created one file with text like:
a b c d
e f g h
i j k l
So my question is that i have to write the script in which like in the first sentence it will take only one space after d and remove all the extra space in the end.I dont... (8 Replies)
Hi All
I am trying to perform the below operation -count=`cat abc.txt | wc -l`
echo$count
5
Head=Start"$DATE"00000"$count"File
echo $HEAD
START15020300000 5File
There is a space coming before 5 which is not needed . How to ignore that . (4 Replies)
The input file is this:
a|b|c|d
x|y|z|n|||||||||
p|q|r|s|||
g|h|i|
w|e|r||
Now as per requirement , each row should have only 3 delimiter.
Now the 2nd row & last row has an extra delimiter, How to remove that ? In some large file having 100K data , there can be 100 such rows having... (4 Replies)
Discussion started by: ikdKunal
4 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)