Hi,
Suppose I have a User define function get_abc in which I am using $0 to get the name of function. But when I call that function in any script, $0 will give the script name, not the function name.
For example:
Function: get_abc
-------------------
get_abc( ){
echo $0
}
Script:... (3 Replies)
My system did stay appears the error Run Time Library Error. What itīs? When the error appear, iīve to reboot my system and lost all I did. Is there the UNIX System problem? Please. I need help!!! (4 Replies)
Discussion started by: marpin
4 Replies
3. Forum Support Area for Unregistered Users & Account Problems
Hello All,
We have a v245 that powered itself off for no reason. Searching around we discovered there is a bug were a temp error is being reported but doesnt actually exist, SUN released an EPIC update, the README is shown below but even after upgrading the ALOM to the latest v1.6.10 we do not... (8 Replies)
Given a particular line number and a corresponding column number, can i write something in the file during run time?
For example x=1 and during runtime i want to write the value of x in column 100 of every line of a given file, then how shud that be done?
Thanks (9 Replies)
Hi,
If I have folder with many pics, and I would like to use that folder for my desktop.
But I don't want a specific pic, I want to replace every set of time the pic from the pics in that folder.
How can I do that?
In ubuntu of course. (0 Replies)
Hi all..
I have a command for example /abc/def/ghi.jkl Filename filename1.
If I run this command, it will ask for y/N which I have to type manually.
Now Im trying to automate it using shell script and input the y option.
Please help me on doing this.
Thanks in advance. ... (7 Replies)
Hi,
i use a crunchbang-LINUX . The Problem: When i download and save a picture, the system automaticaly launches gimp. i tried to find a config file, were i can switch of this "gimp-start," but unfortunatelly i didnt find it.
cat /etc/X11/default-display-manager
/usr/bin/slim
I'm also not... (2 Replies)
There is a website providing traffic camera images that gets updated every few minutes.
My aim is to download the images over time to get a view of traffic conditions through the day.
Website: CHECKPOINT.SG
Image link, as taken from site source: http://www.checkpoint.sg/sg/2701
I tried... (2 Replies)
Discussion started by: Leion
2 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)