I need to pass an empty space in the command ="java ......... "
as one of the arguments where java calls some java command....
(It accepts it in windows as " ")
Thanks in advance
SD (2 Replies)
Hi Experts,
I want to print the lines whose third field in non-empty/blank space.
i.e.
INPUT FILE/B]
dcdccghjrry0yd cont
dcdccttrk820529 cont rdekedfsSCr
dcdccttrdky2d0y cont rdekedfsSC2 ... (3 Replies)
Hi suppose I have a csv file like this
count,1977,1978,1979
usa, , , blue
japan, red, yellow,green
india, , yellow,blue
china, blue, yellow, green
I want the output to be(replace everything, including empty data, with the most recent data):
... (1 Reply)
Hi all,
I need to replace certain robots.txt files with an empty file. I use the following to find the files I want to empty out:
find /Sites -type f -name "robots.txt" -exec grep -il "STAGE" {} \;
(finds all robots.txt files which contain the string 'STAGE')
Now what do I add to this... (3 Replies)
Hi Expert,
Kindly request for your expertise in this matter.
I have below output:
12.125.124.173,xx1.common.com
12.125.124.174,xx2.common.com
12.125.124.175,xx3.common.com
12.125.124.176,
12.125.124.177,
12.125.124.178,
12.125.124.179,xx4.common.com
12.125.124.180,xx5.common.com... (8 Replies)
Hi
I would like to replace empty string with a particluar value, any suggessions with awk ?
my input file is not delimited with any delimiters
input
52001073M8000000004567777
5200107 000000004567778
5200107 000000004567779
52001073M8000000004567789
Expected output... (5 Replies)
Hi,
In a file we have the following data like as below
abcdef="cfg-1-15"
bmmdda-g-45-2
yhdiao"rtg-1-df-34"
I need a sed/awk command to replace the above string with empty.
Thx, (1 Reply)
Hi,
I am using KSH.
I am trying to check if the output file is empty or not.
I tried with ] but what i see is my file is empty but still manages to have a size of 1 instead of 0.
But my file doesnot have anything its empty.
I am not sure how to check this.
can any one help? (10 Replies)
Discussion started by: Sharma331
10 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)