02-16-2012
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello,
I have a single column of data that I would like to cut/print (with awk or ...) into multiple columns at every empty row (or common character).
Input:
5.99123
5.94693
7.21383
5.95202
0.907935
5.99149
6.08427
0.975774
6.077
Output:
5.99123 5.95202 6.08427
5.94693... (7 Replies)
Discussion started by: agibbs
7 Replies
2. Shell Programming and Scripting
Hi -
I'm new to the awk programming language. I'm trying to print a single column of data to several columns, and I found an article on iTWorld.com (ITworld.com - Printing in columns). It looks like the mkCols2 script is very close to what I need to do, but it looks like the end of the code... (2 Replies)
Discussion started by: astroDave
2 Replies
3. UNIX for Dummies Questions & Answers
I have a program which gives me the output as a single column with hundreds of rows like:
213
314
324
324
123
I want to be able to create a new file from this file which allows me to set the number of rows and columns in the new file, i.e. for this example, if I specify 3 rows and 2... (5 Replies)
Discussion started by: ashton_smith
5 Replies
4. Shell Programming and Scripting
Hello Experts,
I am new to this forum, I would like to do the following changes in one of the column of a txt file, which is having around 9 column.
For example, column 3 is having letters like this
AB11
AB12
C
CA
CB
AC1
AC2
I would like to convert the same column as follows
... (5 Replies)
Discussion started by: Fredrick
5 Replies
5. Shell Programming and Scripting
Hi
I have a ksh script which gives me the output as a single column with several rows like:
AAA
BBB
CCC
DDD
EEE
FFF
GGG
HHH
III
I want to be able to create a new file from this file which allows me to set the number of rows and columns in the new file, i.e. for this example, if I... (30 Replies)
Discussion started by: pinpe
30 Replies
6. Shell Programming and Scripting
Hi,
I have a requirement with,
No~Dt~Notes
1~2011/08/1~"aaa
bbb
ccc
ddd
eee
fff
ggg
hhh"
Single column alone got splitted into multiple lines.
I require the output as
No~Dt~Notes
1~2011/08/1~"aaa<>bbb<>ccc<>ddd<>eee<>fff<>ggg<>hhh"
mean to say those new lines to be... (1 Reply)
Discussion started by: Bhuvaneswari
1 Replies
7. Shell Programming and Scripting
Hi,
Input
7488 7389 chr1.fa chr1.fa
3546 9887 chr5.fa chr9.fa
7387 7898 chrX.fa chr3.fa
7488 7389 chr21.fa chr3.fa
7488 7389 chr1.fa chr1.fa
3546 9887 chr9.fa chr5.fa
7898 7387 chrX.fa chr3.fa
Desired Output
7488 7389 chr1.fa chr1.fa 2
3546 9887 chr5.fa chr9.fa 2... (2 Replies)
Discussion started by: jacobs.smith
2 Replies
8. Shell Programming and Scripting
Hi Guys,
I am prety new to the hell scripting world. I am running some grep/cut commands and extracting from a csv file into a list. But the final product I need is that the whole list that I now have has to be broken and separated into columns.
Say what I now have extracted is a list of... (6 Replies)
Discussion started by: h_rishi
6 Replies
9. Shell Programming and Scripting
Dear fellows, I need your help.
I'm trying to write a script to convert a single column into multiple rows.
But it need to recognize the beginning of the string and set it to its specific Column number.
Each Line (loop) begins with digit (RANGE).
At this moment it's kind of working, but it... (6 Replies)
Discussion started by: AK47
6 Replies
10. UNIX for Dummies Questions & Answers
Dear all,
I have a simple question. I have a file like below (separated by tab):
col1 col2 col3 col4 col5 col6 col7
21 66745 rs1234 21 rs5678 23334 0.89
21 66745 rs2334 21 rs9978 23334 0.89
21 66745 ... (4 Replies)
Discussion started by: forevertl
4 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)