can someone tell me how i can write a shell script that will automatically log me in to any machines i want without bothering me for some password input? (i know i have to put in a password but I would like to take care of that in the script)
can anyone help me here? (2 Replies)
Hi quick question from a unix newbie
Working on a project to get me using unix, the point of this project is to find a printer on the network check for jobs in the printer if the printer has no jobs do nothing if the printer has jobs then check the status for errors and e-mail the user. This... (2 Replies)
Iam trying to connect to a system through Telnet using net::Telnet Module
#!/usr/bin/perl -w
use net::Telnet
$myPassword = "abcdef";
$telnet = new Net::Telnet ( Timeout=>10,
Errmode=>'die');
$telnet->open (10.10.20.00);
$telnet->waitfor ('/USERCODE: $/i');
$telnet->print('abc');... (2 Replies)
Hi everybody,
I am thinking on writing a shell script to telnet to Cisco routers, and I am looking for help. I have researched some and could not find much on the topic, or at least much of help anyway...
I read "expect" is one solution, but I am looking for something more flexible, as I... (1 Reply)
Hi
How to call a shell scripting through a Perl scripting? Actually I need some value from Shell scripting and passes in the Perl scripting. So how can i do this? (2 Replies)
Hi all,
I would like to start developping some good scripting skills. Do you think it would be best to start with shell scripting or Perl? I already got a fundation, really basics, in perl. but I am wondering what would be best to be good at first.
Can you please help me determine which one to... (14 Replies)
I am trying to build and expect script to log into multiple aix boxes and change password. I need for the script to terminate if it cannot log into a server because the username or password is wrong.
#!/usr/bin/expect
set timeout 1
set host
set user
set password
set uh "Unknown host"
set... (3 Replies)
Discussion started by: leemalloy
3 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)