10 More Discussions You Might Find Interesting
1. IP Networking
Code:
auto ens3
iface ens3 inet static
address 46.xx.xxx.1x7
netmask 255.255.252.0
broadcast 46.38.xxx.255
gateway 46.xx.xxx.1
auto ens3:0
iface ens3:0 inet static
address 188.xx.xx.xx5
netmask 255.255.255.255
I want the... (1 Reply)
Discussion started by: oshihari
1 Replies
2. UNIX for Dummies Questions & Answers
Hello All,
Many developers in our company use same application account to log in Linux Box for code development, how can i redirect my log in shell history to a different file to avoid history being shown to others or accidentally execute the same command which i or others executed?
Thank you. (4 Replies)
Discussion started by: Ariean
4 Replies
3. Proxy Server
Hi guys
I need to setup server/router in my firm. We got from our ISP dedicated server in their data center. It has a static IP and it servers as replacement for out DSL connection. I configured our internal server to be border gateway and to connects to data center. "Remote" admin installed... (0 Replies)
Discussion started by: solaris_user
0 Replies
4. UNIX for Dummies Questions & Answers
Dear All,
I have a set of columns (usually unknown number) and I would like to sort each of them (descending values) but my columns are independent. Can you please help me
file1
1,5,7
3,4,9
2,6,8
outcome should be
1,4,7
2,5,8
3,6,9
I have tried
sort -n -k1,1 -k2,2 -k3,3
but this... (8 Replies)
Discussion started by: A-V
8 Replies
5. UNIX for Dummies Questions & Answers
Hello
I recently bought this Centos 5.10 VPS.
They already gave me pre-configured everything :
But I still feel like my blogs/shopping cart sites loading very slow.
I would like to clarify few things
1) I'm using Apache, should I upgrade my web server? ( I do not wish to go... (3 Replies)
Discussion started by: johnchristy
3 Replies
6. UNIX for Dummies Questions & Answers
Hi bros
I have a VPS 512mb (Burst 2GB) with Kloxo installed and hosting few sites on it with not much traffic
I am facing high cpu load for the last few days and seems mysqld is overloading the cpu
Any suggestion will be appreciated
Regards
Rizwan
Top output is as under
top -... (2 Replies)
Discussion started by: rizwan65
2 Replies
7. Shell Programming and Scripting
Hi
i am trying to run a report which takes approx 5 hours to complete so what i did i put that reporting command in background and then this reporting process started executed in background but the problem is when i close that session that background job lost :( ....
please help me that... (3 Replies)
Discussion started by: aishsimplesweet
3 Replies
8. UNIX for Dummies Questions & Answers
Hi
What do we mean when we say " Unix is Machine Independent?"
Can anybody explain with example?
Thanks (1 Reply)
Discussion started by: skyineyes
1 Replies
9. UNIX for Dummies Questions & Answers
Hi everybody, I have a VPS account and I have hit my limit for domains to manage through Plesk. I now need to begin administering new domains through UNIX. I've never used UNIX before but do have some experience with command line environments. I was able to connect today (I think). So the next... (1 Reply)
Discussion started by: snarky
1 Replies
10. UNIX for Dummies Questions & Answers
Hello,
I needed a help please...
I have an application which launches process. For this i am using fork and execv method calls. By doing this my launched process are now child process of the parent process(launching process). I dont want this to happen, i want the process that is launched to... (1 Reply)
Discussion started by: deepthi
1 Replies
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)