I want to extract text that is between .W and .A that is this text and store this text in 1.txt. The above pattern continues in the entire file. This means that I will start from 1.txt, then go to next pattern and
and for the second pattern store in 2.txt
As you can see the file numbers actually come from .I that is present in the above pattern.
I am using Linux with BASH and this is what I have done but seem it does not produce the desired results.
i have textfiles that contain a series of lines that look like this:
string0 .................................................... column3a column4a
string1**384y0439 ..................................... column3b column4b... (2 Replies)
Dear Folks :),
I am new to UNIX scripting and I do not know how can I insert some text in the first column of a UNIX text file at command promtp.
I can do this in vi editor by using this command :g/^/s//BBB_
e,g I have a file named as Test.dat and it containins below text:
michal... (4 Replies)
Hi,
I have a file from which i need to extract data between two constant strings.
The data looks like this :
Line 1 SUN> read db @cmpd unit 60
Line 2 Parameter: CMPD -> "C00071"
Line 3
Line 4 SUN> generate
Line 5 tabint>ERROR: (Variable data)
The data i need to extract is... (11 Replies)
There are a lot of ways to extract text from between two strings, but what if those strings occur multiple times and you only want the text from the first two strings? I can't seem to find anything to work here. I'm using sed to process the text after it's extracted, so I prefer a sed answer, but... (4 Replies)
Hi,
I've looked at a few existing posts on this, but they don't seem to work for my inputs.
I have a text file where I want to extract all the text between two strings, every time that occurs.
Eg my input file is
Anna said that she would fetch the bucket.
Anna and Ben moved the bucket.... (9 Replies)
Hi experts,
Ive got a text file which has the following text which will occur in this format at least one time:
+=========================>>
Some stuff that evreryone should knnow
other stufsjdokajkajokajda
aijhjajcdjajcisajcqsqdqwdqad
<<=========================+
It is likely that... (8 Replies)
Here is my task, I feel sure this can be accomplished with see/awk but can't seem to figure out how.
I have large flat file from which I need to extract every case of a pairing of characters (GG) in this case PLUS the previous 20 characters. The output should be a list (which I plan to make... (17 Replies)
Hi Team -
I hope everyone has been well!
I export a file from one of our source systems that gives me more information than I need. The way the file outputs, I need to extract certain strings at different positions on the file and echo them to another file.
I can do this in batch easily,... (2 Replies)
Discussion started by: SIMMS7400
2 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)