Hi,
I am confused about the output of find command.
Please see the two find commands below.
When i put "*.c" i get lots of files. But when i put *c only i get only one file.
Any answer??
$ find . -name "*c"
./clarify/cheval/hp_server/rulemanager/rulemansvc... (3 Replies)
Hi,
I am triying to make sure that there exists only one file with the pattern abc* in path /path/. This directory is having many huge files. If there is only one file then I have to take its complete name only to use furter in my script.
I am planning to do like this:
if ; then... (2 Replies)
Hi
I want to export DOS output of find command in Excel.
However I want information to be in different column and not in same.
I am using this command
set /p String_to_search='Enter String to search !'
set /p File_to_search='Enter File to search !'
findstr /N "%String_to_search%"... (0 Replies)
Just i want to ask How to search and display name of zero byte file
I have used find command but it is showing complete file path
Thanks
find . -size 0
giving me zero byte file with location
1)/home/user/a (4 Replies)
Hi there, finally i'm installed Sco Foxbase 2.1.2d over my Sco Open Server 5.0.7v server.
Well at this point almost is working fine, but, when i Run mi application i receive the next error:
"sh: the_name_of_file": does not exist".
I checked it over the Hard Disk and the file exist, the... (1 Reply)
I have a file example.txt as follows :SomeTextGoesHere
$$TODAY_DT=20140818
$$TODAY_DT=20140818
$$TODAY_DT=20140818I need to automatically update the date (20140818) in the above file, by getting the new date as argument, using a shell script.
(It would even be better if I could pass... (5 Replies)
Hi,
i have sh program which search for a file in a folder structure and provides its path. This is just used to see if that file exits more that once anywhere down the folder structure. I have used find command to search & printing it output on terminal.
I have attached screen shot of it.... (10 Replies)
I am using UNIX to create a script on our system. I have setup my commands to append their output to an outage file. However, some of the commands return no output and so I would like something to take their place.
What I need
The following command is placed at the prompt:
TICLI... (4 Replies)
Hi,
I don't have tree on the Solaris server and our SA don't want to install it. I found this example from One Line Linux Command to Print Out Directory Tree Listing | systemBash that more or less does what I am mainly looking for.
Example run is as below:
$: find ./ | sed -e... (2 Replies)
I'm trying to find out what happened to the rogue game that apt-get told me it installed, so I thought I would find the file. I went to the root and entered:
find -name "rog*.*"
I get a large number of lines saying my access is denied in various directories. I figure I'll practice my Unix... (14 Replies)
Discussion started by: arghvark
14 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)