Note: CarloM's suggestion should work with your sample, however the first variable used in the gsub command gets interpreted as an entended regular expression (ERE). So if your actual "file1" contains characters that have a special meaning in an ERE then it will not work.
( If it did not work for you with your sample input, then what is your OS / version and what did you mean by backslashes ?)
You cannot solve it by using backslashes, since these can also be used to introduce a special meaning to an ordinary character (for example n and \n) ..
--
Bartus11's suggestion relies on a particular (non-POSIX) awk extension so that an empty field separator (FS) means that each individual character becomes a separate field (it is only done here only on every third line, I don't understand why)
--
Also using the special case of null-string FS:
for other awks, one could try:
Last edited by Scrutinizer; 10-06-2013 at 03:57 AM..
Hi,
I have an input data file :-
Test4599,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,2,2,Rain
Test90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,0,Not Rain
etc....
I wanted to transpose these data to:-... (2 Replies)
Hi,
I have this typical extraction problem in AWK.
I have 3 input files..
i) First one is somehow like an oracle of:-
foo 12,23,24
bla 11,34
car 35
ii)Second file is basically detailing the score for each of the second field of first file. Besides, for the first column, it is the... (3 Replies)
Hi,
can I use array elements ( all ) in conditional statements?
the problem is ,the total number of elements is not known.
e.g
A is an array with elements - 1,2,3
now if i want to test if the 1 st field of input record is either 1,2 or 3, i can do something like this
if ( $1 ~... (1 Reply)
i just want to dump my array and see if it contains the values i am expecting. It should print as follows,
ignore=345fht
ignore=rthfg56
.
.
.
ignore=49568g
Here is the code. Is this even possible to do? please help
termReport.pl < $4 | dos2ux | head -2000 | awk '
BEGIN... (0 Replies)
Hi all, I have a file containing 5000 rows and 4 columns. I need to do a loop within the rows based on the values of column 3. my sample data is formatted like the ones below: what i need to do is to make a loop that will allow me to plot the values of x,y,values corresponding to month 1 to month... (10 Replies)
I want change the file when the line contains $(AA) but NOT contains $(BB), then change $(AA) to $(AA) $(BB)
eg:
$(AA) something
$(AA) $(BB) something (7 Replies)
I need a scripting AWK to compare 2 files.
file 1 and 2 are list of keywords
1 is
a
b
c
d
2 is
aa
aaa
b
bb
ccc
d
I want the AWK script to give us the number of times every keyword in file 1 occurs in file 2.
output should be
a 2 (7 Replies)
Hi all,
I'm dealing with a bash script to merge the elements of a set of files and counting how many times each element is present. The last field is the file name.
Sample files:
head -5 *.tab==> 3J373_P15Ac1y2_01_LS.tab <==
chr1 1956362 1956362 G A hom ... (7 Replies)
Hi guys,
First off, i'm a complete noob to UNIX and LINUX so apologies if I don't understand the basics!
I have a file which contains a hex value of '0D' at the end of each line when I look at it in a hex viewer.
I need to change it so it contains a hex value of '0D0A0A'
I thought... (10 Replies)
Hi,
Sure it's an easy one, but it drives me insane.
input ("|" separated):
1|A,B,C,A
2|A,D,D
3|A,B,B
I would like to count the occurence of each capital letters in $2 across the entire file, knowing that duplicates in each record count as 1.
I am trying to get this output... (5 Replies)
Discussion started by: beca123456
5 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)