just put blank harddisk in my ultra10. i see no display to show me the
boot> prompt. i don't know what happened....?? Got a third party graphic card. Display was ok. Monitor seems to be ok. i used different one with same result. (1 Reply)
I have two Dell x86 machines on which I am attempting to install Solaris 10 from CD. I am not doing a Jumpstart install. This is my first experience in installing Solaris (or any other OS). I am following the instructions at How to Quickly Install the Solaris 10 1/06 OS
The first machine... (3 Replies)
Hi all,
Can you tell me how to change the prompt color (only the path part) when I chnange directory with "cd"?
I use the sequence below in ".bashrc" (Solaris 8) to change my prompt colors and I'd like to modify it to change the path color when I cange directory.
PSC() { echo -ne "\"; }... (0 Replies)
HI ,
I am trying to wite a script that will prompt me saying " what is path that you want to find ?". once i specify the path, the script should put this path in the find command mentioned below and execute the script:
find <path> -ctime +200 -type f -exec ls -l {} \;
for example :
... (7 Replies)
I am new to to unix and I want to make my own basic shell. What is the code I can use to change the unix cmd console display? For example my unix display prompt says MyCompterName~, I want it to say WhatEverMan~ (3 Replies)
Hello All,
I would like to display the current time in prompt.
I tried using following command:
export PS1="$(date +%k:%M:%S) $ "
but it gave me a fixed time in prompt whereas my objective is to get the current time everytime.
$ export PS1="$(date +%k:%M:%S) $ "
17:42:42 $
17:42:42 $... (32 Replies)
I don't understand the question below..any can help me? thanks
Display the absolute path of the executable used when a
'grep' command is entered on the command line:
---------- Post updated at 08:30 PM ---------- Previous update was at 08:29 PM ----------
absolute (2 Replies)
In the below bash function multiple variants are input and stored in a variable $variant, and each is written to an out file at c:/Users/cmccabe/Desktop/Python27/out.txt stored on a separate line.
# enter variant
phox2b() {
printf "\n\n"
printf "What is the id of the patient getting... (0 Replies)
Discussion started by: cmccabe
0 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)