Hi all,
I'm looking to write a script that is dependent upon the existence of 2 files each in separate directories. My thought was to do:
**psuedo code **
execute script
check directory 1 for file1
if file exists then
execute script 2 ( checking directory 2 for file 2)
else... (3 Replies)
Hi Experts,
I have a script called test.sh. I am trying to execute it with sh -x test.sh. Where i can find sequence of steps executed one by one. Now i want to these executions to be captured in a file.
i.e sh -x test.sh > output.txt
the above one is notworking.
can anyone help me... (6 Replies)
Hi all, I have the requirement to generate the file containing following command
eval /path/ dsjob -logdetail projectname JOBNAME /path/
1. The file contains the above command say about 150 times i,e only the JOBNAME changes in every command
2. The commands must be written in such a way... (2 Replies)
HI All..
below is my menu options script. in option 2,3 and 4 im giving input and they are saving into their respective text file.
problem is when im trying to "cat" those files in options 7,8 and 9 im not getting the output. no respective file contents are displaying on screen. but if i... (1 Reply)
Hi Experts,
I am very much new to linux scripting, I am currently working on reducing my manual work and hence writing a script to automate few task.
I am running below command to snmpwalk the router..
snmpwalk -v 3 -u WANDL_SU -a MD5 -A vfipmpls -x DES -X VfIpMpLs -l authPriv... (19 Replies)
below is the output xml string from some other command and i will be parsing it using awk
cat /tmp/alerts.xml
<Alert id="10102" name="APP-DS-ds_ha-140018-componentFailure-S" alertDefinitionId="13982" resourceId="11427" ctime="1359453507621" fixed="false" reason="If Event/Log Level(ANY) and... (2 Replies)
Hello Experts,
I am still learning linux and have come across a question, hope to get some answer.
I have two servers, and both have the same version of svn client installed and both have the same user_id.
my SVN client version:
svn, version 1.6.11 (r934486)
compiled Mar 2 2011,... (4 Replies)
Hello All,
I was wondering if there is a way to execute a command in my ".bashrc" file based on how I logged into the PC?
I was thinking maybe there is a way to check how the user (*myself) logged in, maybe somehow with the who command along with something else, but I'm not sure... I know I... (7 Replies)
Discussion started by: mrm5102
7 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)