HI guys,
I have created a script to read 1 column in a csv file and then place it in text file.
However, when i checked out the text file, it is not in a column format...
Example:
CSV file contains
name,age
aa,11
bb,22
cc,33
After using awk to get first column
TXT file... (1 Reply)
Dear all,
I have a file with 5L records. one of the record in the file is as shown below.
MARIA THOMAS
BASIL
1000 FM 1111 MD
GHANA
YY 77354 4774
99999999 1234567
I need to convert this record in below format
"","","","","MARIA","THOMAS","BASIL","","1000 FM 1111 MD","STE... (1 Reply)
Hi,
Using rsync, I've sent the output to a text file. This is the text file :
Pls help me on converting this text file to a csv file. Probably a script or sth to convert the text file to a csv file. (3 Replies)
hi..
I have a text file which looks likes this
2258
4569
1239
258
473
i need to convert it into comma seperated format
eg:2258,4569,1239,258,437
pls help (8 Replies)
Hi,
I have a text file with the following format. Some of the fields are blank.
1234 3456 23 45464 327837283232 343434
5654353 34 34343 3434345 434242
....
....
....
I need to convert this file to a CSV file, like
1234, ,23, ... (3 Replies)
Hi All,
I have a text file with below content.
TradeDate Name SecurityMnc ReasonDesc
=======================================
20120501 Robin ABC FO System Defect
20120502 Robin ABC FO System Defect
I would want this in an excel file in 4 columns,... (3 Replies)
Hello folks
I have a txt file of information about journal articles from different fields. I need to convert this information into a format that is easier for computers to manipulate for some research that I'm doing on how articles are cited. The file has some header information and then details... (8 Replies)
Hi All,
I have a data file and need to extract and convert it into csv format:
1) Read and extract the line containing string ending with "----" (file sample_linebyline.txt file) and to make a .csv file from this.
2) To read the flat file flatfile_sample.txt which consists of similar data (... (9 Replies)
Discussion started by: abhi_123
9 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)