I need to insert data into a perticular field of a csv file, lets say second field.
Can any one help me to do this?
I found that we can do it with sed. can any one guide me to accomplish this?
thanks in advance. (12 Replies)
SHELL SCRIPT
Hi,
I have 3 separate files within a folder. Every File contains data in a single column like
File1 contains data
mayank
sushant
dheeraj
File2 contains
DSA_AT
MG_AT
FLAT_09
File3 contains data
123123
232323 (2 Replies)
Hi,
I have a requirment where I need to pull different columns from a .csv file.
Here is the sample of the csv file.
account,item,flag1,flag2,flag3,flag4,flag5,......feed,tran
I will be have a config.txt file which will have the following information.
item,flag5,flag10,feed,tran... (2 Replies)
Hi All,
I want to remove the rows from File1.csv by comparing the columns/fields in the File2.csv. I only need the records whose first column is same and the second column is different for the same record in both files.Here is an example on what I need.
File1.csv:
RAJAK|ACTIVE|1... (2 Replies)
Hello
I have a csv file which I need to insert addtional commas into. The csv is of the format
field1,field2,field3,field4,...etc...,field13,field14
I need to add extra commas in each record so that the final output looks like
... (1 Reply)
Hi Tech Guru,
I have a test file as below , which needs some more fields to be populated randomly :
dks3243;12;20130823;1420;25m;0;syt
dks3243;rocy;10
dks3243;kiop;18
sde21p4;77;20151210;8479;7py;9;vfr
sde21p4;temp;67
sfq6i01;12;20120123;3412;4rd;7;jui
sfq6i01;uymk;90
sfq6i01;kiop;51
... (8 Replies)
Hi,
i have a csv file which have headers and values of it like below :
headers --> CI Ref SerialNumber LastScanDate
values --> VMware-42,VMware-42,Tue, 20 May 2014 11:03:44 +0000
i want to have a above csv in below format :
headers --> CI Name CI Description CI Ref... (6 Replies)
I have a csv file which is produced out of a SED command sed 's/|/","/g; s/^/"/; s/$/"/' A4.txt > A5.csv and I need either an addition to the SED command or a separate command to convert the following characters which occur within the fields in multiple lines
1) "=" to ="
and
2)""~ to " (4 Replies)
I'm trying to use awk to count the occurrences of two matching fields of a CSV file.
For instance, for data that looks like this...
Joe,Blue,Yes,No,High
Mike,Blue,Yes,Yes,Low
Joe,Red,No,No,Low
Joe,Red,Yes,Yes,Low
I've been trying to use code like this...
countvar=`awk ' $2~/$color/... (4 Replies)
I am trying to parse two csv files and make a match in one column then print the entire file to a new file and append an additional column that gives description from the match to the new file. If a match is not made, I would like to add "NA" to the end of the file
Command that Ive been using... (6 Replies)
Discussion started by: dis0wned
6 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)