I have a case where, I need to look into a file.
Go to each line of the file, find the length of the line, if the length of the line is more than 75 chars, I need to split the line into multiple lines of 75chars max. If the length of the line is less than 75, we need not do anything.
So at the... (4 Replies)
Can any one give me the idea on replacing multiple blank lines with a single blank line?
Please conside it for a file having more than 100 number of characters.
Regards,
Siba (3 Replies)
I have a file that contains the following:
:@:176:@:4:@:name:@:file:@:this is
a summary:@:description can be
long but who knows
can even have <br> tags.:@:how to:@:type:@:18544:@:550:@:400:END:
:@:177:@:9:@:name:@:file:@:summary:@:this
will containg... (18 Replies)
Hi,
I've some files with the following data and i need to convert the lines between the separator ---, into a single line. I've tried with the paste cmd but my main problem is that the number of lines between the separator is not fix, it can very between 1-4 lines.
Input
---
2010-02-22... (4 Replies)
This is related to one of my previous post but now with a slight difference: I need the "Updated:" to be in one line as well as the "Information:" on one line as well. These are in multiple lines right now as seen below. These can have 2 or more lines that needs to be in one line.
System name:... (8 Replies)
Hi,
I have a requirement with,
No~Dt~Notes
1~2011/08/1~"aaa
bbb
ccc
ddd
eee
fff
ggg
hhh"
Single column alone got splitted into multiple lines.
I require the output as
No~Dt~Notes
1~2011/08/1~"aaa<>bbb<>ccc<>ddd<>eee<>fff<>ggg<>hhh"
mean to say those new lines to be... (1 Reply)
Hi,
1. Each message starts with date
2. There is blank line between each message
3. Each message does not contain same number of lines.
Any help in merging multiple lines in each message to a single line is much appreciated.
AIX: Korn Shell
Error log file looks like below.
... (5 Replies)
Hi All,
I have a spool file which as shown below. I want to make it as single line after every semicolon. In this case there should be 2 lines in vi editor.
I am not used to use sed so could you guys please help me out ?
exec spk_dba.sp_runsql('ALP','CREATE DATABASE LINK "TEST" CONNECT TO... (2 Replies)
Hi all, I'm relatively new to scripting, I can do pretty basic things. I have a daily log file that looks like:
timestamp=2017-06-28-01.01.35.080576;
event status=0;
userid=user1;
authid=user1;
application id=10.10.10.10.11111.12345678901;
application name=GUI;
... (29 Replies)
I have code as below
# create temporary table `temp4277`(key(waybill_no))
select waybill_no,concat_ws('',card_type,card_series_no) cardinfo
from rfid_temp_ticket where waybill_no='4277'
group by... (4 Replies)
Discussion started by: kaushik02018
4 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)