10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi ,
I did the initial search but could not find what I was expecting for.
15606Always_9999999997_20160418.xml
15606Always_9999999998_20160418.xml
15606Always_9999999999_20160418.xml
9819Always_99999999900_20160418.xml
9819Always_99999999911_20160418.xmlAbove is the list of files I... (4 Replies)
Discussion started by: chillblue
4 Replies
2. Shell Programming and Scripting
Dear friends,
I have two files. One with all IDs(in a single field) . And another with data(of which say field 5 is ID). I want to create an array of IDs using first file and
while reading second file if the ID appears in the array I need to print $0 else skip.
After a long gap I am... (6 Replies)
Discussion started by: paresh n doshi
6 Replies
3. UNIX for Dummies Questions & Answers
In folder there are files
(eg ABS_18APR2012_XYZ.csv
DSE_17APR2012_ABE.csv) .
My requirement is to delete all the files except today's timestamp
I tried doing this to list all the files not having today's date timestamp
#!/bin/ksh
DATE=`date +"%d%h%Y"`
DIR=/data/rfs/... (9 Replies)
Discussion started by: manushi88
9 Replies
4. UNIX for Dummies Questions & Answers
Hi All,
I am new to unix programming. I am trying for a requirement and the requirement goes like this.....
I have a test folder. Which tracks log files. After certain time, the log file is getting overwritten by another file (randomly as the time interval is not periodic). I need to preserve... (2 Replies)
Discussion started by: mailsara
2 Replies
5. Shell Programming and Scripting
Hi,
I've a file in the following format
1999-APR-8 17:31:06 1500 3 45
1999-APR-8 17:31:15 1500 3 45
1999-APR-8 17:31:25 1500 3 45
1999-APR-8 17:31:30 1500 3 45
1999-APR-8 17:31:55 1500 3 45
1999-APR-8 17:32:06 1500 3 ... (1 Reply)
Discussion started by: vaibhavkorde
1 Replies
6. UNIX for Dummies Questions & Answers
So, I know how to do some of this stuff on an individual level, but I'm drawing a blank as to how to put it all together.
I have a pattern that I'm looking for in a log file. The log file I know came in yesterday, so I want to limit the search to that day's listing of files. How would I do... (5 Replies)
Discussion started by: kontrol
5 Replies
7. Shell Programming and Scripting
Hi folks,
Happy new year.
I have a file 'filename' that i wd like to split basing on the contents in the last column.
The 'filename' content looks like
256772744788,9,11
256772744805,9,11
256772744792,9,11
256775543055,10,12
256782625357,9,12
256772368953,10,13
256772627735,10,13... (3 Replies)
Discussion started by: jerkesler
3 Replies
8. Shell Programming and Scripting
Hi all,
I have a binary file (orig.dat) and two special delimiter strings 'AAA' and 'BBB'. My binary file's content is as follow:
<Data1.1>AAA<Data1.2>BBB
<Data2.1>AAA<Data2.2>BBB
...
<DataN.1>AAA<DataN.2>BBB
DataX.Y might have any length, and contains any kind of special/printable... (1 Reply)
Discussion started by: Averell
1 Replies
9. UNIX for Dummies Questions & Answers
I am using UNIX from few months, I want to delete files in subdirectories that have a timestamp till yesterday. I mean all the files before Jan 10th...
can I just give find and do it or how do I do it??? (2 Replies)
Discussion started by: jcluvme
2 Replies
10. UNIX for Advanced & Expert Users
Hi,
I'm trying to compare Actual.html with a baseline.html
However, everytime it fails b'coz of the timestamp differences
between the two. So, thought of stripping off the timestamp
from both the *html files before comparing using below sed
command over Solaris Unix platform:... (3 Replies)
Discussion started by: elearn.latha
3 Replies
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)