My egrep outputs this:
$ cat html.out|sed -n '/bluetext/s/ / /gp'|egrep '{5}'
<span class="bluetext"><b> Lexington Park, MD 20653</b></span>
But my backreference \1 is empty. I dont understand why. Can someone clarify?
$ cat html.out|sed -n '/bluetext/s/ / /gp'|sed -n... (1 Reply)
print 'test'
SETUSER 'dbo'
go
create proc abc
as
/Some code here/
go
SETUSER
go
print 'test1'
SETUSER 'dbo'
go
Create Procedure xyz
as
/some code here/
go
SETUSER
go
print 'test2'
SETUSER 'dbo' (2 Replies)
Hi,
I want to replace _F* by _F in a xml file. what is the sed command.
I have tried sed "s/_F$/_F/g" or sed "s/_F*/_F/g" , but it does not work. thx
file content
<TAG>KC_FOU</TAG>
<TAG>KC_FABC</TAG>
<TAG>KC_FABCDG</TAG>
desire output
<TAG>KC_F</TAG>
<TAG>KC_F</TAG>
<TAG>KC_F</TAG> (6 Replies)
I need to deploy a JAVA application on two separate servers:
1. Web server (IBM HTTP Web Servers (IHS))
2. Application Server (WebSphere Application Server WAS7.0)
The static content will have to be deployed and handled on Web server. These would include GIFs, HTML, CSS, etc files.... (0 Replies)
Hello, I want to rename multiple files and catch some points about backreference within sed and regex.
Here is a part of my file list. Input:
S92A.fa
S92B.fa
...
S96Z.fa
S921.fa
S922.fa
...
S997.fa Note: The file names are not necessarily continuous from A~Z or 921 ~ 997, as some of the... (3 Replies)
Hi,
I am having trouble while using 'sed' with reading files. Please help. I have 3 files. File A, file B and file C. I want to find content of file B in file A and replace it by content in file C.
Thanks a lot!!
Here is a sample of my question.
e.g. (file A: a.txt; file B: b.txt; file... (3 Replies)
Hello to all,
I have this sed script that replaces hex strins within a binary file.
As you can see, I want to replace all bytes 4X with 2X (where X could take values 0 to F).
sed -e 's/\x40/\x20/g' -e 's/\x41/\x21/g' -e 's/\x42/\x22/g' -e 's/\x43/\x23/g' -e 's/\x44/\x24/g' -e... (7 Replies)
I have following files at /dir1
a.csv.20131201
b.csv.20131201
c.csv.20131201
d.csv.20131201
a.csv.20131202
b.csv.20131202
c.csv.20131202
d.csv.20131202
.......................
.......................
.......................
.......................
I need to move these files to... (4 Replies)
Hi,
I'm using /bin/sh
I would appreciate if someone could help me with SED syntax for a "simple" line.
Here is where I Got to:
I have these strings that are returned by my(Examples) (naturally "FullPath" is always changing don't hardcode this lol)
FullPath/AAA.framework... (3 Replies)
Hello,
I need to know all IP range (ip_prefix), associated with us-west-2 region only from this link - https://ip-ranges.amazonaws.com/ip-ranges.json (it can be opened in wordpad for better visibility)
Please suggest, how would I do it. If vi, awk or sed is needed, I have downloaded it on my... (7 Replies)
Discussion started by: solaris_1977
7 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)