need help on this. let say i hv 1 file contains as below:
STRING
Description bla bla bla
Description yada yada yada
Data bla bla
Data yada yada
how do i want to display n lines after the string?
thanks in advance! (8 Replies)
Hi experts,
I want to grep a number 9366109380 from a file but it will also show me the next 5 lines. Below is the example-
when i grep 989366109380, i can also see the next 5 lines.
Line 1. <fullOperation>MAKE:NUMBER:9366109380:PPAY2;</fullOperation>
Line 2.... (10 Replies)
i need to grep a STRING_A & the next few lines after the STRING_A
example file:
STRING_A yada yada
line 1
line 2
STRING_B yada yada
line 1
line 2
line 3
STRING_A yada yada
line 1
line 2
line 3
line 4
STRING_A yada yada
line 1
line 2
line 3
line 4 (7 Replies)
I have several very large file that are extracts from Oracle tables. These files are formatted in XML type syntax with multiple entries like:
<ROW>
some information
more information
</ROW>
I want to grep for some words, then print all lines between <ROW> AND </ROW>. Can this be done with AWK?... (7 Replies)
This is a variation of an earlier post found here:
unixcom/shell-programming-scripting/159821-merge-two-non-consecutive-lines.html
User Bartus11 was kind enough to solve that example.
Previously, I needed help combining two lines that are non-consecutive in a file. Now I need to do the... (7 Replies)
I have a file lake this
cat ex1.txt
</DISCOUNTS>
<B2B_SPECIFICATION elem="0">
<B2B_SPECIFICATION elem="0">
<DESCR>Netti 2 </DESCR>
<NUMBER>D02021507505</NUMBER>
</B2B_SPECIFICATION>
<B2B_SPECIFICATION elem="1">
<DESCR>Puhepaketti</DESCR>... (2 Replies)
I have a large dataset with following structure;
C 0001 Carbon
D SAR001 methane
D SAR002 ethane
D SAR003 propane
D SAR004 butane
D SAR005 pentane
C 0002 Hydrogen
C 0003 Nitrogen
C 0004 Oxygen
D SAR011 ozone
D SAR012 super oxide
C 0005 Sulphur
D SAR013... (3 Replies)
Hello,
I'm trying to remove the duplicate consecutive lines with specific string "WARNING".
File.txt
abc;
WARNING 2345
WARNING 2345
WARNING 2345
WARNING 2345
WARNING 2345
bcd;
abc;
123
123
123
WARNING 1234
WARNING 2345
WARNING 2345
efgh; (6 Replies)
Discussion started by: Mannu2525
6 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)