06-30-2009
Sorry if not clear
grep -i -w $s1 6-29data
where s1=f
I want to find
F,20090629,5.66,5.96,5.6,5.78,73552200
not
MER-F,20090629,17.38,17.49,17.17,17.3,55600
PLD-F,20090629,15.5,15.6,15.11,15.48,2800
PSA-F,20090629,19.4,19.4,19.14,19.18,1900
RBS-F,20090629,13.89,14.22,13.75,14.02,16600
SFI-F,20090629,7.16,7.16,7.16,7.16,500
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi, I am trying to use a PHP script as a test for a cron job.
My crontab is 1 line:
30 * * * * /home/www/inc/crontab.php
if I test the file through the browser (ie. http://www.domain.com/inc/crontab.php), the PHP script works -- so there is nothing wrong with the PHP script itself or the... (5 Replies)
Discussion started by: Bobafart
5 Replies
2. Shell Programming and Scripting
Hi All.
im a noob to scripting. could somone help me with a script please.
what i want to do is.
1. run a cmd in the script - qmqtool -s
this will give me an output similar to this.
Messages in local queue: 790
Messages in remote queue: 306
Messages in todo queue: 23
i then want... (1 Reply)
Discussion started by: aron
1 Replies
3. Shell Programming and Scripting
I am a scripting noob and I have tried to search on google, but cannot find the answer as to why this script doesn't work properly.
The idea of this script is that it will list all files starting with f in a certain folder, and delete all but the three newest one. I am trying to achieve this by... (4 Replies)
Discussion started by: bronkeydain
4 Replies
4. Shell Programming and Scripting
Hi all, im new to the forums and i hope im not asking a heavily posted Q but here goes.
I use the following script to do a simple calculation, the problem is, the data i receive is in the form of numbers with commas i.e.
1,000,000
This code below wont recognise the commas so i have to remove... (2 Replies)
Discussion started by: benjo
2 Replies
5. UNIX for Dummies Questions & Answers
Hi, Very new to linux but I've just recently setup an ubuntu server.
I have 2 broadband connections and would like to have fallback on the server should one of the lines fail.
I know what I want it to do, but dont know how to script it.
heres the senario;
ubuntu server with 2 ethernet... (0 Replies)
Discussion started by: ziggycat
0 Replies
6. Shell Programming and Scripting
Hi i am a total noob at shell scripting. i was wondering if somebody could help me with my script.
i want the script to search the dev folder for the burner file
because they are different between distrubutions? as i under stand it.
this i the script.
#!/bin/bash
echo "Script för att bränna 360... (4 Replies)
Discussion started by: MatsO
4 Replies
7. UNIX for Dummies Questions & Answers
I m writing a script to check Server Hardening.
The problem is whenever i add new point it grows and it become very tedious to edit the script file.
Is there any way of making them separate and call them from one base script?
Is it possible to define global variable that can be accessed via... (5 Replies)
Discussion started by: pinga123
5 Replies
8. UNIX for Dummies Questions & Answers
Hello,
I've been given the task of checking the date of expiration dates and notify when the date is 30 days away from expiration.
As stated in the Title, I'm very new to this, I did a good bit of work over the last two days to only find out I was going down the wrong path.
I'm not... (3 Replies)
Discussion started by: drey4184
3 Replies
9. Shell Programming and Scripting
Hi
This is my first time attempting a bash script, or any kind of programming.
I'm trying to get a clear picture but it helps to work backwards.
It would be greatly appreciated if someone could show me what this script would look like...
Write a script that displays todays date in... (1 Reply)
Discussion started by: earthicle
1 Replies
10. UNIX for Beginners Questions & Answers
Hey Guys and Gals, Im a complete Noob to Unix. But recently have started working on a unix system for my PET/CT scanner. My scanner comes with a MOD drive for backup. I would like to back up to USB (its alot cheaper). But the only way to do so is by manually enterin the unix commands. Id like to... (13 Replies)
Discussion started by: TorresGXL
13 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)