Greetings.
I am struggling with a shell script to make my life simpler, with a number of practical ways in which it could be used. I want to take a standard text file, and pull the 'n'th word from each line such as the first word from a text file.
I'm struggling to see how each line can be... (5 Replies)
I have a csv file in which there are numbers like
078976/9XXX
098754/8XXX
I want to replace the XXX with null. I want to know the command/code to do this.
I know how to replace the whole word/number. But don't know how to replace a part of it.
Thanks in advance,
Mihir (3 Replies)
Hi,
The file format is like the following.
timestamp=2008-02-28-23.50.29.550675;category=CONTEXT;audit event=CONNECT;
event correlator=2;
database=CURDOMS;userid=inst3;authid=INST3;
origin node=0;coordinator node=0;
application id=AC122081.FA97.054468155029;application... (2 Replies)
Hi,
I am a newbie to shell scripting and to Linux environment as well.
In my project I am trying to search for following text from the httpd.conf file
<Directory '/somedir/someinnerdir'>
AllowOverride All
</Directory>
and then remove this text and again rewrite the same text.
The... (1 Reply)
New to sed...
Have a file foo.txt (below).
Need to replace text on 2 lines, but can only feed sed the first few characters of each line (all lines are unique).
So, in my example, I have put '$' in place of what I need to figure out how to feed the whole line.
What I have thus far:
sed -e... (6 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
(o) Checkout an auto part: should prompt the user for the name of the auto part
and borrower's name:
Name:... (2 Replies)
Hi all,
I'm new to shell scripting and hence this query.
I have 2 files. temp.txt and config.txt.
The values in temp.txt are tab separated.
ex: temp.txt
AB CDE GHIJ OPQRS WXY
ex:config.txt (1st line for 1st element of temp.txt and so on)
start = '1' end='5'
start = '6' end =... (26 Replies)
Hi there
I just wondered if someone could give me some perl advice
I have a bunch of text files used for a wiki that have common headings such as
---++ Title
blah
---++ Summary
blah
---++ Details
Here is the multiline
block
of text I
wish
to (6 Replies)
Hello friends, I need a BIG help from UNIX collective intelligence:
I have a CSV file like this:
VALUE,TIMESTAMP,TEXT
1,Sun May 05 16:13:05 +0000 2013,"RT @gracecheree: Praying God sends me a really great man one day. Gotta trust in his timing.
0,Sun May 05 16:13:05 +0000 2013,@sendi__... (19 Replies)
Hi All,
I have a XML file which is looks like as below. <<please see the attachment >>
<?xml version="1.0" encoding="UTF-8"?>
<esites>
<esite>
<name>XXX.com</name>
<storeId>10001</storeId>
<module>
... (4 Replies)
Discussion started by: Rajeev_hbk
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)
09-04-2012
