12-23-2005
$ sed -e s/\'//g datafile
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi
I have a shell script with many lines as below:
comment on column dcases.proj_seq_num is dcases_1sq;
....
....
I want the above script to be as below:
comment on column dcases.proj_seq_num is 'dcases_1sq';
I want to have single quotes like that as above for the entire shell... (2 Replies)
Discussion started by: dreams5617
2 Replies
2. Shell Programming and Scripting
hi,
echo 'abc' will give output abc
how can i get output as 'abc'
plz help. thanks in advance (3 Replies)
Discussion started by: javeed7
3 Replies
3. Shell Programming and Scripting
Hi,
I've been trying to write a regex to use in egrep (in a shell script) that'll fetch the names of all the files that match a particular pattern. I expect to match the following line in a file:
Name = "abc"
The regex I'm using to match the same is:
egrep -l '(^) *= *" ** *"$' /PATH_TO_SEARCH... (6 Replies)
Discussion started by: NanJ
6 Replies
4. Shell Programming and Scripting
Could you please help in unix scripting for below scenario...
In my input file, there might be a chance of having a string ( Ex:"99999") after 5th double quote for each record. I need to replace it with a space.
Ex : Input :
"abcdef","12345","99999","0986"... (3 Replies)
Discussion started by: vsairam
3 Replies
5. Shell Programming and Scripting
i want to replace mistaken quotes in line starting with tag 300 and relocate the quote in the correct position so the input is
223;25
224;20100428064823;1;0;0;0;0;0;0;0;8;1;3;9697;18744;;;;;;;;;;;;
300;X;Event:... (3 Replies)
Discussion started by: wradwan
3 Replies
6. Shell Programming and Scripting
Hi I want to replace single quote with two single quotes in a perl string.
If the string is <It's Simpson's book> It should become <It''s Simpson''s book> (3 Replies)
Discussion started by: DushyantG
3 Replies
7. Shell Programming and Scripting
Platform : RHEL 5.8
I want to end each line of this file with a single quote.
$ cat hello.txt
blueskies
minnie
mickey
gravity
snoopyAt VI editor's command mode, I have used the following command to replace the last character with a single quote.
~
~
~
:%s/$/'/gNow, the lines in the... (10 Replies)
Discussion started by: John K
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8. Shell Programming and Scripting
Hi All ,
We have source data file as csv file and since data could contain commas ,each attribute is quoted into double quotes.However problem is that some of the attributa data also contain double quotes which is converted to double double quote while creating csv file
XLs data :
... (2 Replies)
Discussion started by: Shalini Badal
2 Replies
9. Shell Programming and Scripting
From:
1,2,3,4,5,This is a test
6,7,8,9,0,"This, is a test"
1,9,2,8,3,"This is a ""test"""
4,7,3,1,8,""""
To:
1,2,3,4,5,This is a test
6,7,8,9,0,"This; is a test"
1,9,2,8,3,"This is a ''test''"
4,7,3,1,8,"''"Is there an easy syntax I'm overlooking? There will always be an odd number... (5 Replies)
Discussion started by: Michael Stora
5 Replies
10. Shell Programming and Scripting
Hi all...
(This is Don's domain.)
I have come across an anomaly in sh and dash compared to bash.
It involves echoing a character set to a file in sh and dash compared to bash.
It is probably easier to show the code and results first.
#!/usr/local/bin/dash
#!/bin/sh
#!/bin/bash
echo... (4 Replies)
Discussion started by: wisecracker
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)