hey,
I have a file with numbers in US notation (1,000,000.00) as well as european notation (1.000.000,00)
i want all the numbers to be in european notation.
the numbers are in a text file, so to prevent that the regex also changes the commas in a sentence/text i thought of:
sed 's/,/\./'... (2 Replies)
on the remote server that im running the snmp command against, below is the information about the specific directory i'm concerned about:
SIZE USED AVAIL
673G 483G 157G
can someone explain to me why snmp is telling me the size of this filesystem is 176399584?
... (5 Replies)
Are there any one-liners or short codes to separate 4-digit numbers into 2?
For example, input.txt:
1234
5678
3091
2851
Output.txt:
12 34
56 78
30 91
28 51 (7 Replies)
hello every one
I have file with following records
begin
ASX120016719
ASX190006729
ASX153406729
ASX190406759
ASX180006739
end
for each record there is ASX word then 9 digits after it (NO spaces included)
what i want is to :
1- skip ASX
2-skip first 2 digits after ASX word... (16 Replies)
Hello all,
I have a file with several lines like this:
(1,1) (4,10) (8,23) (17, 4) (6,8) etc.
and I need this:
( 1 , 1 ) ( 4 , 10 ) ( 8 , 23 ) ( 17 , 4 ) ( 6 , 8 )
How do I insert a space between the left parenthesis and the first number, between the first number and the comma,... (2 Replies)
hi I am trying to use SED to replace the line matching a pattern using the command
sed 'pattern c\
new line
' <file1 >file 2
I got two questions
1. how do I insert a blank space at the beginning of new line?
2. how do I use this command to execute multiple command using the -e... (5 Replies)
Hi Experts,
How to sepearate the list digit with letters : with a space from where the letters begins, or other words from where the digits ended.
file
52087mo(enbatl)
52049mo(enbatl)
52085mo(enbatl)
25051mo(enbatl)
The output should be looks like:
52087 mo(enbatl)
52049... (10 Replies)
I need to replace the (*) in the fist of a list with numbers using sed for example >
this file contain a list
* linux
* computers
* labs
* questions
to >>>>
this file contain a list
1. linux
2. computers
3. labs
4. questions (7 Replies)
Hi,
I have a file which looks like this
FORD|1333-1| 10000100010203| 100040507697|0002|356.45|5555| SSSSY|KKKKM|1000005|10| N096|10043| C987
I need the output to look like this
FORD|1333-1|10000100010203|100040507697|0002|356.45|5555| SSSSY|KKKKM|1000005|10| N096|10043| C987
The leading... (8 Replies)
Discussion started by: wahi80
8 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)