Hi !
I have the following situation -
##First variable
variableA=JOB_A
##bunch of other variable
JOB_A_RESTART=cleanupJobA
JOB_B_RESTART=cleanupJobB
JOB_C_RESTART=cleanupJobC
now i need a script which would -
1. take the first variable
2. create a new variable name... (2 Replies)
I am needing to create a variable(changing) and assign it a value(changing) ... I am using C-Shell..
Example:
foreach account in ($Accountlist)
set account_connect = "$account/$account_pass"
end
I want to make set account_connect to store various values ? $account_connect did not... (3 Replies)
The scenario is like this :
I need to read records from a file one by one and increment counter1, if a certain field matches with a number say "40"..the script should increment the counter2 and also extract a corresponding field from the same line and adding them one by one and redirecting the the... (5 Replies)
Okay -- I hope I ask this correctly.
I'm working on my little shell script to write vendor names and aliases to files from user input. If a user choose to add to a file, he can do that as well. I'm using a select loop for this function to list all the possible files the user can choose from.... (7 Replies)
Hi all,
I am fairly new to unix scripting and will like to know how to dynamically set the name of an environment variable to be used.
We have a .env file where we defined the names and locations of data files, trigger files, directories .... etc
Example of variables defined in .env... (4 Replies)
I want to append values to same string variable inside a recursive function that I have .. I do not want to write to any file but use a variable..
Can anyone please help with it? Thanks in advance. (6 Replies)
I need to copy the log file dynamically and that should run in loop , which means it should pick what ever the latest file is updated in that directory.
I am able to display the list and copy to directly but i have no idea on how to pick the dynamically updated files.
when i use this code, i... (1 Reply)
Hi Team!!
Please can anyone tell me why the following line does not work properly?
str3+=$str2
it seems that str3 variable does not keep its value in order to be concatenated in the next iteration! Thus when i print the result of the line above it returns the str2 value
What i want to do is to... (8 Replies)
Hi,
I am looking for the way to add variable number of spaces between two string. e.g input line is
a ,bb
abc ,bcb
pqr ,bfg
My output should be something like this
a ,bb
abc ,bcb
pqr ,bfg
This text... (9 Replies)
Hi,
I am trying to print copy percentage completion dynamically by using the script below,
#!/bin/bash
dest_size=0
orig_size=`du -sk $sourcefile | awk '{print $1}'`
while ; do
dest_size=`du -sk $destfile | awk '{print $1}'`
coyp_percentage=`echo "scale=2; $dest_size*100/$orig_size"... (4 Replies)
Discussion started by: Sumanthsv
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)