05-14-2012
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi
I have to do the following.I have to format a file test.t
The contents are
# Header 1231
xyz
asdf
asdapsdcsd
//string1 = "pqrs"
//string1 = "abcd"; //info
//string1 = "*pqrs"; //add
string1 = "#123"; //sub
//string1 = "#1234567890"
data = check(string1)
//string1 = "#1234567890"... (12 Replies)
Discussion started by: gopsman
12 Replies
2. Shell Programming and Scripting
Hello - is there any way in awk I can do...
4861 x(1) y(1) z(1)
4959 x(1) y(1) z(1)
5007 x(1) y(1) z(1)
4861 x(2) y(2) z(2)
4959 x(2) y(2) z(2)
5007 x(2) y(2) z(2)
4861 x(3) y(3) z(3)
4959 x(3) y(3) z(3)
5007 x(3) y(3) z(3)
to become...
4861 x(1) y(1) z(1) 4861 x(2) y(2) z(2)... (3 Replies)
Discussion started by: catwoman
3 Replies
3. Shell Programming and Scripting
Hi,
I have a (quite large) data file which looks like:
_____________
header part..
more header part..
x1 x2 x3 x4 x5 x6
x7 x8 x9 x10 x11 x12
x13 ...
... x59 x60
y1 y2 y3 y4...
... y100
______________
where x1, x2,...,x60 and y1, y2,...y100 are numbers of 10 digits (so each line... (5 Replies)
Discussion started by: lego
5 Replies
4. Shell Programming and Scripting
How to add the filename to end of each line with | as seperator, except first and last line of the file(s) in directories(with diff tree structure) using shell script?. And also how to replace a list of strings with another set of strings, which is present in a file?.
Kindly help out on... (1 Reply)
Discussion started by: av_vinay
1 Replies
5. Shell Programming and Scripting
I have a file with contents something similar to as below :
SVCNAME,12m-1a,1a-2a,2a-3a,3a-4a,5a-6a,6a-7a,7a-8a,8a-9a,9a-10a,10a-11a,11a-12n,12n-1p,13p-14p,14p-15p,15p-16p,16p-17p,17p-18p,18p-19p,19p-20p,20p-21p,21p-22p,22p-23p,11p-12m, TOTALS... (5 Replies)
Discussion started by: deo_kaustubh
5 Replies
6. Shell Programming and Scripting
Hello,
I'm having trouble with formatting some text via the terminal. I can get it perfectly formatted, but when I try and copy paste the text from the output file it loses it's formatting. Very frustrating!
Basically I have 7 files (data data2 data3 data4 data5 data6 data7) containing a... (13 Replies)
Discussion started by: facetoe
13 Replies
7. Shell Programming and Scripting
Hi Team,
We have a requirement where we need to format input file using shell script by meeting the below conditions.
1. 1. Ignore first 549 characters of that file.
2. 2. After that we need to make a file of 100 characters per line, repeat it until the 3rd ... (16 Replies)
Discussion started by: ataneja7
16 Replies
8. Shell Programming and Scripting
Hi,
Please find the below lines of a file
B1/OT "GIB10" 837 130308 1351 MONORONOUS DIGI PATH FAULT SUPER
B1/OT "GIB10" 520 130418 1537 MONORONOUS DIGI PATH FAULT SUPER
B1/XT "GIB10" 762 130421 0653 TV Y-CEIVER ADMIN RXOCF-62 241_OKEBOLE_NEW 1
B1/XT "GIB10" 385 130425 1931 TV Y-CEIVER... (2 Replies)
Discussion started by: Ardhendu
2 Replies
9. Shell Programming and Scripting
Need assistance on the data extraction using awk
Below is the format and would like to extract the data in another format
-------------------------------------------------------------------------------------------------
Minimum Temperature (deg F )
DAY 1 2 3 4 5 6 7 8 9 10 11... (4 Replies)
Discussion started by: ajayram_arya
4 Replies
10. UNIX for Advanced & Expert Users
Optimization shell/awk script to aggregate (sum) for all the columns of Huge data file
File delimiter "|"
Need to have Sum of all columns, with column number : aggregation (summation) for each column
File not having the header
Like below -
Column 1 "Total
Column 2 : "Total
...
...... (2 Replies)
Discussion started by: kartikirans
2 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)