11-29-2010
The script in post #10 just needed the awk corrected to repair the error seen from the corrected "sed" (the one with double quotes).
The whole script has dubious logic and we need to know what it is meant to do.
Last edited by methyl; 12-01-2010 at 08:32 AM..
Reason: typo
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I think someone hacked my UNIX account and I cannot get back into MY OWN account!!!!!! :( I was wondering if any of the experts here would be able to help me either get back into my account or change my password back to what it was or find out what it is now so I can get back in and change it. ... (2 Replies)
Discussion started by: speedemn
2 Replies
2. UNIX for Dummies Questions & Answers
Hi,
could anybody name all the different UNIX versions, producer, historie, etc?
need a short briefing...
THX a lot in advance...
Greetings,
PatrickXXO (2 Replies)
Discussion started by: PatrickXXO
2 Replies
3. Solaris
I have SunOs 5.8. I need to change password using a unix shell script. I have tried to pipe the passwords to the passwd command but does not work. Pls provide a script to change passwds of a list of users using a shell script.
( I have also tried crypt() but did not work)
The flow of the... (2 Replies)
Discussion started by: tofani
2 Replies
4. Shell Programming and Scripting
I am getting data like this in a flat file
seg No
Test A4 0000002595, A2, test ,Datatest
Test, A1 0000002595, A1,SELF , Employed,1,2,3,400.50
Test, A2 0000002595, A2, test ,Data,eurp
Test, A3 0000002595, A2, test ,Data
I need to produce a flat file so that output file... (0 Replies)
Discussion started by: nikeng
0 Replies
5. Shell Programming and Scripting
hi experts,
i'm new in scripting unix i have some problem with my script below is shown my script :
#!/bin/sh
BASEDIR=/export/home/mapadm
BINDIR=$BASEDIR/bin
LOGDIR=$BASEDIR/log
TDRDIR=$LOGDIR/TDR
BACKUPDIR=/data/log
export BASEDIR BINDIR LOGDIR TDRDIR BACKUPDIR
YEAR=`date '+%Y'`... (21 Replies)
Discussion started by: bucci
21 Replies
6. HP-UX
Hi,
I'm new to unix and i'm using HP Unix
I tried the following and getting error like
1. $sam
sh:sam not found
2.Also i want to monitor/trace other user's command what they are using when am in to the same server
Appreciate if any one help on this (4 Replies)
Discussion started by: msgobinathan
4 Replies
7. Shell Programming and Scripting
Hi,
I need help urgently for following issue. Pls help me to resolve this issue.
I am calling sql script file(file1.sql) from UNIX Shell Script(script1.ksh) using sql plus and trying to create flat file that contains all records returned from SQL query in SQL script(file1.sql)
I given... (6 Replies)
Discussion started by: praka
6 Replies
8. UNIX for Advanced & Expert Users
Hi All,
I need a script that invokes the sql query every 14 days and send email
Very Very urgent this one to me.... (6 Replies)
Discussion started by: bujjisveeru
6 Replies
9. UNIX for Dummies Questions & Answers
Hi All,
i am new on this forum, can someone please answer the following questions as i am also new for UNIX, you help would be much appreciated:
1. How do you delete the full directory hierarchy?
2. How do you find out all process run by user Kamran ?
3. how would you extract something... (1 Reply)
Discussion started by: kami151
1 Replies
10. Shell Programming and Scripting
I am trying to write a shell script which takes an input file as an arguement in the terminal e.g. bash shellscriptname.sh input.txt. I would like for the file to be read line by line each time checking if the .txt file contains certain words or letters(validating the syntax). If the line being... (1 Reply)
Discussion started by: Gurdza32
1 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)