hi,
i am facing a problem in merging two files using awk,
the problem is as stated below,
file1:
A|B|C|D|E|F|G|H|I|1
M|N|O|P|Q|R|S|T|U|2
AA|BB|CC|DD|EE|FF|GG|HH|II|1
....
....
....
file2 :
1|Mn|op|qr (2 Replies)
Help in writing a script using sed which updates fileOne with the contents from fileTwo
Example:
Contents of fileOne
1,111111
2,897823
3,235473
4,222222
Contents of fileTwo
1,111111,A,1,2
4,222222,A,2,2
5,374632,A,3,2
6,374654,A,4,2
Final File should be:
1,111111,A,1,2... (9 Replies)
Hello everyone!!
I am not completely new to shell script but I havent been able to find the answer to my problem and I'm sure there are some smart brains here up for the challenge :D.
I have several CSV files that I need to combine into one, but I also need to know where each row came from.... (7 Replies)
:confused:Hello -- i just joined the forums. I am a complete noob -- only about 1 week into learning how to program anything... and starting with linux.
I am working in Linux terminal.
I have a folder with a bunch of txt files. Each file has several lines of html code. I want to combine... (2 Replies)
I have lot of csv file collected from script like below :
Name of files (some examples) there are thousands of it:
192.168.0.123_251_18796_1433144473.csv
192.168.0.123_251_18796_1433144772.csv
192.168.0.123_251_18796_1433145073.csv
192.168.0.123_251_18796_1433145372.csvContent of each... (5 Replies)
Hi all,
I have two separate csv files(comma delimited) file 1 and file 2.
File 1 contains
PAN,NAME,Salary
AAAAA5467D,Raj,50000
AAFAC5467D,Ram,60000
BDCFA5677D,Kumar,90000
File 2 contains
PAN,NAME,Dept,Salary
ASDFG6756T,Karthik,ABC,450000
QWERT8765Y,JAX,CDR,780000... (5 Replies)
I am trying to merge all csv files from source path into one single csv file in target. but getting error message:
hadoop fs -cat /user/hive/warehouse/stage.db/PK_CLOUD_CHARGE/TCH-charge_*.csv > /user/hive/warehouse/stage.db/PK_CLOUD_CHARGE/final/TCH_pb_charge.csv
getting error message:... (0 Replies)
Hi all,
i need help.
I have two csv files with a huge amount of data.
I need the first column of the first file, to be compared with the data of the second, to have at the end a file with the data not present in the second file.
Example
File1: (only one column)
profile_id
57036226... (11 Replies)
I have three files with similar pattern i need to merge all the coloumns side by side from all three files according to the first coloumn example as shown below
I mentioned 5 coloumns only in example but i have around 15 coloumns in each file.
file1:
Name,Samples,Error,95RT,90RT... (4 Replies)
Discussion started by: Raghuram717
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)