Hi
when i execute the below command
sftp -b ftpCommand.ksh remoteuser@remoterserver
i am getting the error "-b requires an argument greater than zero"
Please can any one help me. (1 Reply)
Hi
when i execute the below command
sftp -b ftpCommand.ksh remoteuser@remoterserver
i am getting the error "-b requires an argument greater than zero"
Please can any one help me. (4 Replies)
Hi,
i need to change a file with perl having contents below, but it will not do any action if change is being already made.
file.txt
AAAAAA
BBBBBB
CCCCCC
output.txt (that required)
AAAAAA
#BBBBB
DDDDDD
CCCCCC
Thanks, (2 Replies)
Hi Gurus,
I've a find command that gets the list of files from a source directory where the extension is not html, xml, jsp, shtml or htaccess. The below find command runs fine from the command prompt or in a shell script. I need to eventually run it in a PERL script and am getting the... (5 Replies)
Hello All
I am facing an issue
The unix script is running fine in unix environment which uses ssh connection but when I try to run the same in informatica environment (same server where I was running the unix script manually successfully) its showing the below error
command-line line 0:... (11 Replies)
Hello,
i have downloaded an rpm package "hadoop-0.20.205.0-1.amd64.rpm"
in /usr/local/ directory.
I'm trying to install the rpm package in a new path/location (/usr/local/hadoop-0.20.205), but i can't.
I did:
1st try: Didn't work
sudo rpm -i --prefix=/usr/local/hadoop-0.20.205... (1 Reply)
Hello,
i have installed a package by using the command
sudo rpm -i filepackage.rpm
package filepackage is already installed
when i try to remove it, i get an error saying "is not installed":
sudo rpm -e filepackage.rpm
error: package filepackage is not installed
How can... (4 Replies)
While going through the below perl code, there is a line
which contains
$sheet -> {MaxRow} ||= $sheet -> {MinRow};
Could anyone please explain the meaning of ||= and where it is used
complete code
---------------
foreach my $sheet (@{$excel -> {Worksheet}}) {
... (2 Replies)
i have perl script that used to be working great , once i edit it in windows
and convert it to UTF-8 and then via FTP return it .
also did:
chmod +x foo.pl
and then when i try to run it :
./foo.pl
im getting this error:
./foo.pl: Exec format error. Wrong Architecture.... (4 Replies)
I try to install php-56 in a zone, but I have the following problem:
pkg install php-56
Creating Plan (Running solver): \
pkg install: No solution was found to satisfy constraints
maintained incorporations: None
Creation Plan: dependency error (s) in proposed packages:
Not... (0 Replies)
Discussion started by: ymk369
0 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)