Hi,
I need to extract the uncommon (better say incremental) part from 2 files say file_1 and file_2.
file_2 contains everything that is in file_1. That is file_2 has been created internally somehow :
cat file_1 temp_file > file_2
My objective is to extract the temp_file part from... (2 Replies)
Hi,
I was wondering if there is an easy way to strip off the required basename. I have a script called apb0110021.sh and the contents of the script are
typeset -u MScript=`basename $0 | cut -d. -f1`
scriptname=sys.Audit.ksh
parms="PROJECT1 dsAudit $MScript 1 BEGIN"
$SCRIPTS/$scriptname... (3 Replies)
Hi all,
I have to extract only the second part of a database column (VARCHAR) and the value is seperated by a "~"
xyz~
chxyz36r~
abder~000082685
mnops~000083554
fulfil302~00026
Above are some examples of the values and for each record I have to extract the value after "~" , if there is a... (8 Replies)
Hi,
I am trying to extract part of a line using "awk". My requirement is to extract the value $6 (which is the last parameter) from a line. As the sixth value contains some space, i am getting only part of the string. so i am trying to extract from $6 to the end of the buffer.
How to do it... (7 Replies)
Hi all,
FileOne
family balance >>>>>
0 0
0 0
java.io.FileNotFoundException: Settings.xml (No such file or directory)
at java.io.FileInputStream.open(Native Method)
..
....
.....
.....
java.lang.NullPointerException
...
.....
......
Stacktrace:
at... (2 Replies)
here is the line on which i want to process
`empNo` int(13) NOT NULL AUTO_INCREMENT,
it sometimes doesnt have comma at the end too
`empNo` int(13) NOT NULL AUTO_INCREMENT
i want to extract all except "AUTO_INCREMENT" not only this line i ,want the code to work on any line if it has... (5 Replies)
Hello All,
I have a text file with contents as below:
contents of error.txt:
message1="Reason for error code1"
message2="Reason for error code2"
message3="Reason for error code3.
To solve this, you may try doing restart"
I have a requirement where in I have to... (4 Replies)
Hi,
I needed to extract some specific characters from a string based on user input. For example: After the script executes the user enters the following details:
Please enter the string: This is a shell script
Please enter the starting position: 11
Please enter the number of characters to be... (4 Replies)
I have a string:
2015-04-16 07:30:05,625000 +0900 xxxx.com
I just want to extract the time from the above line I am using the below syntax
x=~ /(.*) (\d+)\:(\d+)\:(\d+),(.*)\.com/
$time = $2 . ':' . $3 . ':' . $4;
print $time
But it is not working. Can some1 please help (2 Replies)
Discussion started by: karan8810
2 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)