Hello,
Is there a way to trigger a Windows bat file or program on a different machine from a different UNIX server using KSC file?
I hope you can assist me with this.
Thanks! (0 Replies)
I have two questions I am struggling with...
How do the programs p1, p2, and p3 need to handle their standard files so they can work like this: p1 | p2 | p3 ?
What exactly is this command supposed to do?
$ kill -QUIT %1
& This command below?
$ sort -o emp.lst emp lst &
Any... (1 Reply)
the command "nawk" returns the error command cannot be found in my unix system.
Is there a specific library i need to have to use this command?
I tried, the whereis command and it returns nothing.
if there is nothing to do, what command can i use to replace this nawk command?
Appreciate some... (4 Replies)
Hi,
I am trying to attach tape drive to sun V890 running Solaris 9 on it.
I have installed HBA(qlogic) in slot 1 of 0-8 slots and booted the system. I do not see HBAin prtdiag output. The tape drive is not attached to HBA. The tape drive I am going to attach is Sony AIT3.
1.How can I make... (3 Replies)
I have a school project to create a shell program same as calendar i must create
a txt file with celebrations with vi i know this but the problem is i don't know awk
and grep.
The object of object is to create a program who read a date an appear the celebration.
Can you help me please !!!... (1 Reply)
Hoping someone can help clarify what I need.
At present I have a Sun Ultra 2 with two ultrawide scsi cards and 2-12 drive multipacks (one multipack to one card, the other multipack to the other card), 2 Sun Ultra 10's, and a Sun E4500 with a differential scsi card connected to a half filled... (4 Replies)
I am looking for any help on locating a set of install disks or downloads of AIX 3.2.5 or earlier.. We recently lost our HDD running AIX 3.2.5 and need to reinstall but have no OS disk to complete.. Any help would be appreciated.. Thanks (4 Replies)
I am trying to write a shell script which takes an input file as an arguement in the terminal e.g. bash shellscriptname.sh input.txt. I would like for the file to be read line by line each time checking if the .txt file contains certain words or letters(validating the syntax). If the line being... (1 Reply)
write a script using shift and case to receive 11 argument and do the following
--arg1 - print hello message and the current proccess id
--arg2 - read and edit a file based on the value which came along with the arg2.
--arg3 - validate whether all... (1 Reply)
Discussion started by: saku
1 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)