I am able to get the position value by below command and not able to transform that to 1 and replace in file
I've noticed there're a number of awk-based proposed solutions posted for your 336 posts.
Could you try something with awk and see how far you get, please!
I have two files file1 and file2 as shown below:
file1:
name
nameabc
bcd
nameabcdefg
file2:
age
age1111
age2345
age6743
I have pasted one file on the other with the delimiter "|" and the resulttant file is:
name|age
nameabc|age1111
bcd|age2345
nameabcdefg|age6743 (1 Reply)
Hi,
I have a file with only data 1 row:
AA#?BB#?CC#?DD
Assume '#?' is the delimiter, i want the output in another file to be:
AA
BB
CC
DD
Pls let me know if this is possible by sed ?
Thanks in advance. (3 Replies)
Hi,
I am new to unix , I have a requirement for formating the input file and generate the output file as per the downstream requirement ..
My application receiving a text input file having 4 field and my application need to check each field and if some value of a field is blank ..then it need... (1 Reply)
I have a file called vm.cfg .
content of file.
acpi = 1
apic = 1
builder = 'hvm'
How would i write a script which will add
boot = 'd' at 3rd line.
For example.
after running the script the file should be like below.
acpi = 1
apic = 1
boot = 'd'
builder = 'hvm'
I dont want to... (3 Replies)
I am new ot unix. Is there one or two lines of command (sed may be) to format a file.
My source is..
<tag1>
<tag2>
<datatag1>
data1
</datatag1>
<datatag2>
data2
</datatag2>
<datatag3>
data3
</datatag3>
<datatag4>
data1
</datatag3>
</tag2>
</tag1> (2 Replies)
Pls help in formatting a txt file using shell scripting
Input file format:
Name priya 2010-09-21 10:43:49
TEXT ID 1
hi
TEXT ID 2
how
TEXT ID 3
r
TEXT ID 4
u
Output required:
name priya hi how r u (4 Replies)
hi thanks a lot
But pls help me if my input file is the below format:
Name priya 2010-09-21 10:43:49
TEXT ID 1
hi
TEXT ID 2
how
TEXT ID 3
r
TEXT ID 4
u
Name2 priya2 2010-09-21 10:43:49
TEXT ID 1
hi1
TEXT ID 2
how1
TEXT ID 3
r1 (4 Replies)
I need to create a fixed width file based on the column lengths.
lets assume I have six(this may be dynamic) fields each are of different length
column1=6 #size of the column
column2=3
column3=2
column4=3
column5=4
column6=5
I tried below code snippet but it is not working
echo... (4 Replies)
I have a file like below
position1 0 7802 7802 0 client1 - -
position1 8 8032 8032 0 client1 ... (7 Replies)
Discussion started by: manas_ranjan
7 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)