Hi there,
I like to ask how i shall monitor specific string or keyword in rotating log files. e.g. I have at 10 rotating logfiles.
I use the command below to grep the string, but eventually become non functional because the logfile rotates and new logfile is active.
tail -f <logfile1> |grep... (1 Reply)
I am familiar with using tar and exclude/include files:
tar zcf backup.dirs.tgz --files-from=include.mydirs --exclude-from=exclude.mydirs --no-recursion
but was wondering if I could use find in the same way. I know that you can just specify the directories to exclude but my list is... (2 Replies)
Hi Gurus.
I have a directory and i receive many files with extension .log. I processed the file as i get it. i want to process all the files except one which i know i don't want to process.
cd /backup/temp/rajesh/PACS #--- directory , under this i have below files... (1 Reply)
Loving the rsync command and beginning to write some scripts with it.
However I'm hung up on the --exclude function.
Script is tested and works great BEFORE I put the --omit in.
What am I doing wrong in my syntax?
rsync $OPTS /cis/cloverleaf/cis6.0/integrator/... (2 Replies)
Hi,
I need to exlucde the files which are present in exclude.txt from a directory
exlcude.txt
AUZ.txt
AUZ.chk
NZ.txt
NZ.chk
tried with below code but not working
ls -ltr | grep -v `cat exclude.lst` (9 Replies)
I would like to write a script to check the log , if any line in the log have the string in include_list.txt but do not have the string in exclude_list.txt , then send alert mail to administrator , as below example , the line 1 have the string "string 4" ( which is in include_list.txt ) but do not... (7 Replies)
How do you exclude a filesystem using du command in solaris?
for example /proc
Tried this but its not working
du -sk -d /* --exclude=/proc | sort -nr | cut -f2 | xargs du -sh | head -
in linux it is working. (2 Replies)
How do you exclude a filesystem using du command in solaris?
for example /proc
Tried this but its not working
du -sk -d /* --exclude=/proc | sort -nr | cut -f2 | xargs du -sh | head - (1 Reply)
Discussion started by: jinslick25
1 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)