Hello,
I have about 90 servers that I need to update snmp configs. I am trying to write a script that will echo 4 new lines of text into the snmpd.conf file. I have tested it locally and it works when the server ssh into itself but when I try to run the script to ssh into a remote server it logs... (5 Replies)
I need to pass a parameter that will then be grepped.
I need it to grep /paramater and then have a space
so if 123 was passed my grep would be grep '/123 ' sample.log
this works fine from the command line
but when i try and set it searchThis="/$2 "
and then run grep $searchThis... (6 Replies)
Hello,
I would like for the user to input the date for a particular log file, then have the input sent to a variable, which is then used via grep to extra the logs for the specific date the user request.
I did some searching, but I still don't understand why I'm not seeing any result.
... (4 Replies)
flat file looks like
ooss-pfgg-1234,vol_name_1, mail-list
decoded =
hostname,volum_name,mail_list
each line has diff info
am trying to ssh into each fist field, check vol usage for second field, and if greater than 90% send mail to mail-list
got the second and third part working,
... (1 Reply)
I have a list of fields that I want to check a file for, returning that field if it not found at all in the file. Is there a way to do a grep -lc and return the passed variable too rather then just the count?
I am doing some crappy work-around now but I was not sure how to regrep this for :0 so... (3 Replies)
I have a script which reads a number out of a log file. The pertinent line is this:
cat /tmp/listofnumbers
When I run cat /tmp/listofnumbers what I am seeing is on each line.
I am trying to make the script read from that file and grep for a variable like the following line should do:
... (4 Replies)
Hi,
I have public and private keys and that's works fine for me. now I am sending files one by one on remote server and I want to check is file successfully delivered or not by comparing size of file on local machine and remote server using ‘stat -c%s'.
Below operations need to be done on... (2 Replies)
I have a lot of files with keywords and unique names. I'm using a shell script to refer to a simple pattern file with comma separated values in order to match on certain keywords. The problem is that I don't understand how to handle the wildcard values when I want to skip over the unique names.
... (5 Replies)
I have a variable called $a1 which maps to something like "http://servername proxy1 count http" and a lots of entries in a file on remote server.
If I have the following in my .sh script:
sed -i "\%$a1%d" mylog.txtthe line is deleted from mylog.txt. Great.
I'm trying now to remvoe this from a... (3 Replies)
Im trying to search for a single variable in the first field and from that output use awk to extract out the lines that contain a value less than a value stored in another variable. Both the variables are associated with each other.
Any guidance is appreciated.
File that contains the... (6 Replies)
Discussion started by: ncwxpanther
6 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)