02-20-2015
Any attempts from your side?
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1. Shell Programming and Scripting
file1.txt :
india pakistan bangladesh
japan canada africa
USA srilanka Nepal
file2.txt
Delhi
Tokyo
washington
I have to cut the first column of file1.txt and apend it with file2.txt as another column like this
Delhi india
Tokyo japan
washington USA
... (4 Replies)
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2. UNIX for Advanced & Expert Users
Hi,
I have a file A.txt (tab separated) as below:
pavan chennai/tes/bangalore 100
sunil mangalore/abc/mumbai 230
kumar delhi/nba/andhra 310
I want to change only second column as below . Rest of columns as it is ;The ouput file is also tab... (4 Replies)
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3. Shell Programming and Scripting
Hello all,
I want to transpose the rows of a file to the columns (every characters include spaces), i.e.:
input:
abcdefg
123 456
output:
a1
b2
c3
d
e4
f5
g6
I wrote a script:
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4. UNIX for Dummies Questions & Answers
How to copy entire file content into another file being in last line mode of vi ?
---------- Post updated at 10:07 AM ---------- Previous update was at 09:56 AM ----------
Got it :
:1,30w file.txt (1 Reply)
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5. Shell Programming and Scripting
Hello everyone
I have a csv file organized just like in the following example:
col1,col2,col3,CODE_0, ... , colN
col1,col2,col3,CODE_0, ... , colN
col1,col2,col3,CODE_1, ... , colN
col1,col2,col3,CODE_1, ... , colN
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6. Shell Programming and Scripting
Hi,
Can anyone please tell me about how we can delete an entire column from a tab delimited file?
Mu input_file.txt looks like this:
And I want the output as:
I used the below code
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7. Shell Programming and Scripting
so i have several files that look somewhat like this:
{
"afafa": "afaf",
"afafaa" : ""
}
<newline>
<newline>
i want to grab everything in the file except the empty new lines at the end. note, there may be newlines within the content itself.
(
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8. Shell Programming and Scripting
Hi, I am newbie in shell script.
I need your help to solve my problem.
Firstly, I have 2 files of csv and i want to compare of the contents then the output will be written in a new csv file.
File1:
SourceFile,DateTimeOriginal
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cat file01.out
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10. Shell Programming and Scripting
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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)