10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi experts,
I have a file image.csv as below:
COMPUTERNAME,23/07/2013,22/07/2013,21/07/2013,20/07/2013,19/07/2013,18/07/2013,17/07/2013
AED03852180,3,3,3,3,3,3,3
AED03852181,3,3,3,3,3,3,1
AED09020382,3,0,3,0,3,3,3
AED09020383,1,3,3,3,2,1,3
AED09020386,3,3,0,3,3,0,3 ... (4 Replies)
Discussion started by: zaq1xsw2
4 Replies
2. Shell Programming and Scripting
I have two CSV files in the following format:
First file:
GroupID, PID:TID, IP, Port
Sample data:
0,1000:11,127.0.0.1,445
0,-1:-1,127.0.0.1,800
1,1000:11,127.0.0.1,445
1,-1:-1,127.0.0.1,900
2,1000:11,127.0.0.1,445
2,-1:-1,180.0.0.3,900
Second file:
IP,Port,PID
Sample data... (6 Replies)
Discussion started by: rakesh_arxmind
6 Replies
3. Shell Programming and Scripting
Hi all,
I have some files with different extensions. I want to list the files that doesnt end with particular extension for eg .txt. I want to list all files except .txt. How can I do the same?
Thanks
Ananth (2 Replies)
Discussion started by: Ananthdoss
2 Replies
4. Programming
Hi folks,
I would like to get familiar with shell script programing.
The first task is:
write a shell script that:
scans your home-folder + sub-directory for all txt-files that all users of your group are allowed to read and write
then output these files sorted by date of last... (4 Replies)
Discussion started by: rollinator
4 Replies
5. Shell Programming and Scripting
I have to grep a pattern. scenario is like :-
Suppose "/etc/sec/one" is a string, i need to check if this string contains "one" using any utility
something like
if /etc/sec/one | grep ; then
Thanks in advance
Renjesh Raju (3 Replies)
Discussion started by: Renjesh
3 Replies
6. Shell Programming and Scripting
hi All,
I have this sample text file - access.log:
Jan 18 21:34:29 root 209.151.232.70
Jan 18 21:34:40 root 209.151.232.70
Jan 18 21:34:43 root 209.151.232.70
Jan 18 21:34:56 root 209.151.232.70
Jan 18 21:35:10 root 209.151.232.70
Jan 18 21:35:23 root 209.151.232.70
Jan 18 21:36:04 root... (2 Replies)
Discussion started by: linuxgeek
2 Replies
7. Shell Programming and Scripting
Hi,
I spend few hours already searching this forum, but cannot find the solution matching exactly my case.
I have multiple log files, I need to filter them so I get info about certain event.
So we have files:
LOGA.txt
LOGB.txt
LOGC.txt
LOGD.txt
LOGE.txt
1. I need to grep lines in... (10 Replies)
Discussion started by: Vitoriung
10 Replies
8. Shell Programming and Scripting
So here is goes to the Gurus of shell programming......I have tried a lot of different ways and its a very challenging code to write but i am enjoying it as i troubleshoot and hopefully someone can provide me a better option....Thank you in advance for your time and support....Much appreciated...
... (12 Replies)
Discussion started by: aavam
12 Replies
9. UNIX for Dummies Questions & Answers
Hi,
I am new at UNIX and programing in general and only have a basic knowledge of C++. I am helping out with some research at a college and was given the task to sort through captured packets via IP addresses. I was wondering if anyone could help me with writing a code which filters through pcap... (1 Reply)
Discussion started by: hershey101
1 Replies
10. Shell Programming and Scripting
Hi there,
I have a couple of files I need to merge. I can do a simple merge by concatenating them into one larger file.
But then I need to filter the file to get a desired result.
The output looks like this:
TRNH 0000000010941
ORDH
OADR
OADR
ORDL
ENDT 1116399 000000003... (2 Replies)
Discussion started by: Meert
2 Replies
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)
