editing line in text file adding number to value in file Post: 302591661

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Adding Text To each line of a file

How would I add text to the beginning of each line in a text file in a script right after the file is created from another text file.

2. Shell Programming and Scripting

adding text to end of each line in a file

I'm needing to add a "hour:min" to the end of each line in a document. The document in this case is only going to be one line. if this inserts it at the end, what needs to be changed to add something at the end... /bin/echo "%s/^/$filler/g\nwq!" | ex -s $oFile Thank you...

3. Shell Programming and Scripting

Adding specific text and spaces to each line in a text file

Hi, I wanted to add specific text to each row in a text file containing three rows. Example: 0 8 7 6 5 5 7 8 9 0 7 9 7 8 9 0 1 2 And I want to add a 21 at the beginning of the first row, and blank spaces at the beginning of the second two rows. To get this: 21 0 8 7 6 5 5 7 8...

4. Linux

Get a specific line number from a text file

Hello! All, Could you please tell me how to get a specific line number from a text file? For example below, ABC DEF ---> Get this line number, return to an variable GHI My OS is Linux. Thank you so much for your help in advance!

5. Shell Programming and Scripting

adding a line to a text file

I have a tab delimited text file, id name distance 1 3325167 0.334561754018 2 3290488 0.389444269458 3 3288794 0.392312701782 4 3347602 0.392532202097 5 3295355 0.394394169485 I need to add a line after the header line. The first and third field of...

6. Shell Programming and Scripting

adding line number to end of records in file

Given a file like this: abc def ghi I need to get to somestandardtext abc1 morestandardtext somestandardtext def2 morestandardtext somestandardtext ghi3 morestandardtext Notice that in addition to the standard text there is the line number added in as well. What I conceived is...

7. Shell Programming and Scripting

Adding text to the end of the specific line in a file(only to the first occurrence of it)

Hi, I want to add a text to the end of the specific line in a file. Now my file looks like this: 999 111 222 333 111 444 I want to add the string " 555" to the end of the first line contaning 111. Moreover, I want to insert a newline after this line containg the "000" string. The...

8. Shell Programming and Scripting

Adding filename and line number from multiple files to final file

Hi all, I have 20 files (file001.txt upto file020.txt) and I want to read them from 3rd line upto end of file (line 1002). But in the final file they should appear to start from line 1. I need following kind of output in a single file: Filename Line number 2ndcolumn 4thcolumn I...

9. UNIX for Dummies Questions & Answers

[Help] Adding text to a variable line in a file

Hey guys, I need to write a script that will add a specific text at the end of a specific line (of a text file). but the line is a variable this is my text file : device_2 ansible_ssh_host=127.0.0.1 ansible_ssh_port=30000 ansible_ssh_user='root' device_2 ansible_ssh_host=127.0.0.1...

10. Shell Programming and Scripting

Adding user name to file, and then displaying new line number

Hi all - I'm completely stumped by a script I'm working on... The short version is I have a file called 'lookup' and in it are hundreds of names (first and last). I have a script that basically allows the user to enter a name, and what I need to have happen is something like this: Record...

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)