Dear Guyz:)
I have 2 different input files like this. I would like to pick the values or letters from the inputfile2 based on inputfile1 keys (A,F,N,X,Z).
I have done similar task by using awk but in that case the inputfiles are similar like in inputfile2 (all keys in 1st column and values in... (16 Replies)
Hello,
I have a data file with 300,000 records in it, and another file which contains only the line numbers of roughly 13,000 records in the data file which have data integrity issues. I'm trying to find a way to print the original data by line number identified in the second file. How can I do... (2 Replies)
I have two files... file1 and file2.
Where columns 1 and 2 of file1 match columns 1 and 2 of file2 I want to create a new file that is all file1 + columns 3 and 4 of file2
:b: Many thanks if you know how to do this.... :b:
file1
31-101 106 0 92
31-101 106 29 ... (2 Replies)
Hi Experts,
I am trying to get the output from a matching pattern but unable to construct the awk command:
file :
aa bb cc 11
dd aa cc 33
cc 22 45 68
aa 33 44 44
dd aa cc 37
aa 33 44 67
I want the output to be : ( if $1 match to "aa" start of the line,then print $4 of that line, and... (3 Replies)
value=$(some command)
for all in `echo $value`
do
awk checks each value (all) to see if it is a odd number. if so, prints the value
done
sounds easy enough but i've been unable to find anything on google. (2 Replies)
Hi ,
I am looking to print the whole string from file2.txt but it is only printing 77 but not the whole matched string from File2.txt Any help is appreciated.
Thanks,
Script
awk '
BEGIN {
OFS="\t"
out = "a.txt"}
NR==FNR && NF {a=$0; next}
function print_65_11() {
if... (11 Replies)
I am looking to move matching lines (01 - 07) from File1 and 77 tab the matching string from File2, to File3.txt. I am almost done but
- Currently, script is not printing lines to File3.txt in order.
Thanks a lot.
Any help is appreciated.
Script I am using:
awk 'FNR == NR && ! /^]*$/ {... (9 Replies)
Hi,
Please help to fetch the values for a key from below data format in linux.
Sample Input Data Format
11055005|PurchaseCondition|GiftQuantity|1
11055005|PurchaseCondition|MinimumPurchase|400
11055005|GiftCatalogEntryIdentifier|Id|207328014
11429510|PurchaseCondition|GiftQuantity|1... (2 Replies)
Hello to all,
I'm trying to print the value corresponding to the words A, B, C, D, E. These words could appear sometimes and sometimes not inside each group of lines. Each group of lines begins with "ZYX".
My issue with current code is that should print values for 3 groups and only is... (6 Replies)
Discussion started by: Ophiuchus
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)