Ok I found a way to tell sed about that [0092] char.
As an example, let's take this line:
(as seen on the screenshot above.)
Let's use the od command to see what's inside this char:
We clearly see 302 and 222 that seem to compose our '
Using this, we can then write
(works at least in bash)
i keep getting the following error with the code segment below when i try to compile the program.
The code is from 'defs.h'
parse error before '('
parse error before ')'
stray '\' in program
this is the code segment and the error is on the second line of the segment
#define... (1 Reply)
I have a cronjob that I need to run everyday and it needs to have todays date inputed, here is what I have, but is not working as expected..........
23 02 * * * cd /path;./RequestSummaryReport.sh $(date +%Y-%m-%d)
the output from mail gives me.............
Date: Fri, 8 Feb 2008 02:12:07... (4 Replies)
I try to compare the day and month of someones birthday with the day and month of today, so my little bash script can send a mail to the person that has its birthday that day.
The first line of the file birthdays looks like this:
firstname,lastname,01/01/1990,....
The variable birthday's... (4 Replies)
I am aware this question has been answered time and again. I feel I have tried everything I have seen on the net and really need help to get this working.
Same old story. Shell script, working from command but not from cron. I need my script to take values from a .properties file. Tried... (2 Replies)
What I have here is a pretty textbook recursive function. Its purpose right now is simply to display all folders that don't contain folders.
It works fine in all instances I can think of... except one. If there is a folder with a space in its name, the thing goes Kablooie.
AFAIK the problem comes... (5 Replies)
Hi,
I am beginner to Unix.
My requirement is to validate the encoding used in the incoming file(csv,txt).If it is encoded with UTF-8 format,then the file should remain as such otherwise i need to chnage the encoding to UTF-8.
Please advice me how to proceed on this. (7 Replies)
I am trying to make all the fields containing lower case letters upper case and the third field of a file display ** instead.
I have this:
awk '{printf "%s %s ** %d %d\n", $1, $2, $4, $5}' database.txt | tr '' '' < database.txt
And that only changes it to upper case, other... (4 Replies)
I am setting up a system as an ADSL gateway. ADSL is working fine. PF is not forwarding for some reason.
# ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33196
priority: 0
groups: lo
inet6... (0 Replies)
Hi,
I am trying to login from one AIX server to another without using a password, a basic configuration, however it doesn't seem to work.
All things are in place. I have both a public and private key in the ~/.ssh folder and also have an "authorized_keys" file on the target-server containing... (5 Replies)
Hi all!!
I´m using command file -i myfile.xml to validate XML file encoding, but it is just saying regular file . I´m expecting / looking an output as UTF8 or ANSI / ASCII
Is there command to display the files encoding?
Thank you! (2 Replies)
Discussion started by: mrreds
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)