Hi all,
I've been experiencing a difficulty trying to match a number and write it to a new file.
My input file is: input.txt
It contains the lines:
103P 123587.256971 3.21472112 3.1517423
1.05897234566427 58.2146258 12.35478 25.3612489
What would be the sed command to... (17 Replies)
Hi,
I would like to use SED to do the following string replacement:
asd1abc to www1cda
asd2abc to www2cda
...
asd9abc to www9cda
I can use 'asd.abc' to find the orignal string, however I don't know how to generate the target string. Any suggestion?
Thanks,
... (2 Replies)
How can I write a script that takes a cisco config file and outputs every occurrence of two, or more, pattern matches through the whole config file?
For example, out of a config file, i want to print out every line with interface, description and ip address through the whole file, and disregard... (3 Replies)
I have following pattern in a file:
00:01:38 UTC
abcd
00:01:48 UTC
00:01:58 UTC
efgh
00:02:08 UTC
00:02:18 UTC
and I need to change something like the following
00:01:38 UTC
abcd
00:01:48 UTC
XXXX
00:01:58 UTC
efgh
00:02:08 UTC
XXXX (6 Replies)
Hi experts , im new to Unix,AWK ,and im just not able to get this right.
I need to match for some patterns if it matches I need to print the next few words to it.. I have only three such conditions to match… But I need to print only those words that comes after satisfying the first condition..... (2 Replies)
Im using the command below , but thats not the output that i want. it only prints the odd and even numbers.
awk '{if(NR%2){print $0 > "1"}else{print $0 > "2"}}'
Im hoping for something like this
file1:
Text hi this is just a test
text1 text2 text3 text4 text5 text6
Text hi... (2 Replies)
Hello Experts , require help . See below output:
File inputs
------------------------------------------
Server Host = mike
id rl images allocated last updated density
vimages expiration last read <------- STATUS ------->... (4 Replies)
I need to grep for the pattern text inside the square brackets which are in red and not in green..my current code greps patterns both of them, which i don't want
Input fileref|XP_002371341.1| oxoacyl-ACP reductase, putative gb|EPT24759.1| 3-ketoacyl-(acyl-carrier-protein) reductase ... (2 Replies)
The intended result should be :
PDF converters
'empty line'
gpdftext and pdftotext?xml version="1.0"?>
xml:space="preserve"><note-content version="0.1" xmlns:/tomboy/link" xmlns:size="http://beatniksoftware.com/tomboy/size">PDF converters
gpdftext and pdftotext</note-content>... (9 Replies)
Discussion started by: Klasform
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)