Extracting text between two strings, multiple instances Post: 302714213

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

extracting a set of strings from a text file

i have textfiles that contain a series of lines that look like this: string0 .................................................... column3a column4a string1**384y0439 ..................................... column3b column4b...

2. Shell Programming and Scripting

Extracting text between two strings, first instance only

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...

3. Shell Programming and Scripting

Extracting text between two strings

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....

4. Programming

Control multiple program instances - open multiple files problem

Hello. This shouldn't be an unusual problem, but I cannot find anything about it at google or at other search machine. So, I've made an application using C++ and QtCreator. I 've made a new mime type for application's project files. My system (ubuntu 10.10), when I right click a file and I...

5. Shell Programming and Scripting

Extracting text between two constant strings

Hi All, I have a file whose common patter is like this: .I 1 .U 87049087 .S Some text here too .M This is a text .T Some another text here .P Name of the book .W Some lines of more text. This text needs to be extracted. .A more text goes here too .I 2

6. Shell Programming and Scripting

Extracting Multiple Lines from a Text File

Hello. I am sorry if this is a common question but through all my searching, I haven't found an answer which matches what I want to do. I am looking for a sed command that will parse through a large text file and extract lines that start with specific words (which are repeated throughout the...

7. UNIX for Dummies Questions & Answers

Extracting 22-character strings from text using sed/awk?

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...

8. Shell Programming and Scripting

Extracting values based on line-column numbers from multiple text files

Dear All, I have to solve the following problems with multiple tab-separated text file but I don't know how. Any help would be greatly appreciated. I have access to Linux mint (but not as a professional). I have multiple tab-delimited files with the following structure: file1: 1 44 2 ...

9. Shell Programming and Scripting

Grep for text between twp strings for multiple occurances.

I need to get text between two strings <app-deployment file=" and </app-deployment> as it appears more than once in the file then how can i store the text between each occurrence in a separate file ? Thus, i need the below to go in found1.tmp and the below to go in found2.tmp ...

10. UNIX for Beginners Questions & Answers

Extracting strings at various positions of text file

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,...

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)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

extracting a set of strings from a text file

Discussion started by: Deanne

2. Shell Programming and Scripting

Extracting text between two strings, first instance only

Discussion started by: fubaya

3. Shell Programming and Scripting

Extracting text between two strings

Discussion started by: JamesForeman

4. Programming

Control multiple program instances - open multiple files problem

Discussion started by: hakermania