Thanks Anbu ..its working fine..i am facing a starnge issue now
command given by you works fine if there is no control m appended at the end of the line or else it will display 0.0000 ....is there any way i can remove controlm from the file and then use the awk command...i tried with sed but it is not working
Code:
sed 's/^M//g' abc.csv > def.csv
mv def.csv abc.csv
awk -F"," ' NR > 1 { printf("%.04f",$3) } ' abc.csv
0.0000
vi abc.csv
As Of Date,Count,Checksum^M
01/31/2014,3702,-170552450514.86^M
Last edited by karthik adiga; 02-05-2015 at 06:11 AM..
Reason: output of query
Hi,
I need add leading zeroes to a field in a file based on the character count. The field can be of 1 character to 6 character length. I need to make the field 14bytes.
eg:
8351,20,1
8351,234,6
8351,2,0
8351,1234,2
8351,123456,1
8351,12345,2
This should become.
... (3 Replies)
i have a file1 with many lines. i have a script that will let me input a string. for example, APPLE. what i need to do is to copy all lines from file1 where i can find APPLE or any string that i specify and paste in on file 2
thanks in advance! (4 Replies)
I need to read in the string from input file and reform it by cut each segment and check the last segement lenght. If the last segment length is not as expected (see below segment file or table. It is predefined), then pad enough space.
Old string
FU22222222CA6666666666AKxvbFMddreeadBP999... (1 Reply)
I need to read in the string from input file and reform it by cut each segment and check the last segement lenght. If the last segment length is not as expected (see below segment file or table. It is predefined), then pad enough space.
Old string
FU22222222CA6666666666AKxvbFMddreeadBP999... (11 Replies)
Need help. I tried using an awk command to pad zeroes. Unfortunately, the "|" pipe delimited character is gone when I tried to write the records to another file.
awk -F \| ' {$1=sprintf("%06s", $1); print $0}' $CUSTFINAL2 > $CUSTFINAL3
BEFORE
"KEYRECORD"|"SA ID"|"PER ID"|"SP ID"|"ACCT... (3 Replies)
here is what i want to achieve... consider a file contains below contents. the file size is large about 60mb
cat dump.sql
INSERT INTO `table1` (`id`, `action`, `date`, `descrip`, `lastModified`) VALUES (1,'Change','2011-05-05 00:00:00','Account Updated','2012-02-10... (10 Replies)
Hi,
I did some research but cannot find the right solution so hopefully someone can help me here.
I have a long string format like:
VAR=111:aaaa,222:bbb,333:ccc
it could be
VAR=111:aaa,222:bbb,333:ccc,444:ddd, etc
what I looking for is eg.
if I give ccc, it will return me 333... (2 Replies)
i am having file like this
#!/bin/bash
read -p 'Username: ' uservar
match='<color="red" />'
text='this is only a test
so please be patient
<color="red" />'
echo "$text" | sed "s/$match/&$uservar\g"
so desireble output what i want is if user type MARIA
this is only a test
so please... (13 Replies)
I am trying to read a value from a mapping file and would need to replace the value based on country parameter
source_table_@ctry_final
Expected
final_var=source_table_aus_final
If the country is in nz,usa,uk then
final_var=diff_table_nz_final
final_var=diff_table_usa_final
like that... (10 Replies)
Discussion started by: Master_Mind
10 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)
02-05-2015
