Hi Can any one help me remove the unwanted data? I would want to remove the complete event id 4910 ( the type there is INFO), that means, I have to remove starting from 7th - 19th lines. can any one of you please help?
Thanks, (24 Replies)
Hello,
Can anyone pls. provide me with the command for deleting files older then 15 days with a restriction to keep at least 5 files in a directory even if they are older then 15 days.
Any help will be highly appreciated.
Thanks,
Pulkit (4 Replies)
What is the correct way to delete unwanted applications from a MACbook
running OS/X 10.4.1.1.
It is sufficient to drag and drop from Applications folder to Trash, then clear
Trash? (2 Replies)
Hi All,
I want to clean my Solaris Server ( Removing Unwanted files and folders in Server ) .Kindly any one tell me the steps in doing this activity,
regards
Rj (1 Reply)
Experts ,
Below is the data:
--- Physical volumes ---
PV Name /dev/dsk/c1t2d0
VG Name /dev/vg00
PV Status available
Allocatable yes
VGDA 2
Cur LV 8
PE Size (Mbytes) 8
Total PE 4350
Free PE 2036
Allocated PE 2314
Stale PE 0
IO Timeout (Seconds) default
--- Physical volumes ---... (5 Replies)
hi
i have a set of similar files. i want to delete lines until certain pattern appears in those files. for a single file the following command can be used but i want to do it for all the files at a time since the number is in thousands.
awk '/PATTERN/{i++}i' file (6 Replies)
Hi,
Can any one help me, in deleting the records from the database table based on the following condition:
script should take a configurable parameter as input. The input is nothing but “no. of years”.
For example, if I enter 2 as input parameter, then the 2 year old records should get... (2 Replies)
Hi,
I have a flaty file from which i am fetching few columns in tablular form as below code.
Now i want to fetch the column 6 and 7 in below code only if it either of them is non zero.However below startement
awk -F, '$6==0 && $7==0{exit 1}' ${IFILE}
is not working..Not sure where is the... (36 Replies)
I collect data in a file in below format(Month Day Year Size) in RedHat Linux. Now i want to calculate the data size date wise. As i code shell script after long time, i forgot the features and syntax. Can anyone help me regard this please.
Feb 8 2014 15
Feb 10 2014 32
Feb 10 2014 32
Feb 12... (2 Replies)
Hi everyone,
I have a microbial diversity table in the format ;k__kingdom; p__phylum, etc, somer rows have descriptions before the :k__ (like the af028349.1 below) is there a way I can get rid of this text (which is different every time) and keep all the other columns?
Thanks a bunch!
;... (1 Reply)
Discussion started by: Juan Gonzalez
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)