08-12-2009
Worked like a charm, thanks so much.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi ,
I am doing invert grep using -v but the string contain "/" which break the grep command and it do not skip the lines with "/" on it.
Diffu.txt
========
1159c1159
< <td align="right" valign="middle" class="paddingRight2px" id="featureListItemChannelButton7466">
---
> <td... (1 Reply)
Discussion started by: rajbal
1 Replies
2. HP-UX
Hi Experts,
I have data coming in 4 columns and there are new line characters \n in between the data. I need to remove the new line characters in the middle of the row and keep the \n character at the end of the line.
File is comma (,) seperated.
Eg:
ID,Client ,SNo,Rank
37,Airtel \n... (8 Replies)
Discussion started by: sasikari
8 Replies
3. Shell Programming and Scripting
Hi All
Please help me to remove the first 2 character from the file name.
files are like this
$ ls
12aman file
13atul si
56rana se
I want to remove the first 2 char which are numbers.
I want the o/p like thus
aman file
atul si
rana se (8 Replies)
Discussion started by: atul9806
8 Replies
4. Shell Programming and Scripting
I receive a file which is Dos format. When I view the file using vi, I was able to find ^M, ^@ characters in beteen records. I wanted to remove these control/special characters. I used the dos2unix command. This removed the ^M characters. But I am unable to remove the ^@ character. I tried even the... (6 Replies)
Discussion started by: machomaddy
6 Replies
5. UNIX for Dummies Questions & Answers
I am trying to remove the tab character from a file, which occurs on two places in every line. So far I have tried the following and most are from threads in this forum:
sed -i '' -e 's/ / /' file.dat
sed -i '' -e 's/*/ /' file.dat
sed -i '' -e 's/\t*/ /g' file.dat
sed -i '' -e 's/*//g'... (4 Replies)
Discussion started by: figaro
4 Replies
6. Shell Programming and Scripting
Hello,
I need to remove ^L character from a file as below:
HELLO "I "
HELLO "I "
^L HELLO "I"
HELLO "I "
HELLO "I "
Please suggest.
Thanks !!
Please use next time code tags for your code and data (9 Replies)
Discussion started by: skhichi
9 Replies
7. Shell Programming and Scripting
Hi All.
I have a file that contains some special characters and I'm trying to use AWK to search for lines between <pattern1> and <pattern2>.
As an example:
I need the lines between the line containing ' select_id="x_0 ' and the line containing the next instance of ' from '. This is a file... (5 Replies)
Discussion started by: Mudshark
5 Replies
8. Shell Programming and Scripting
Hi I have around 300 files in a folder. When I type ls -l I see the following
Mouse.chr10_+_:101862321-101863928.maf
Mouse.chr10_+_:101862322-101863928.maf
Mouse.chr10_+_:101862323-101863928.maf
But when I run my scripts, they couldn't recognise the filename because of hidden backslash like... (5 Replies)
Discussion started by: quincyjones
5 Replies
9. Shell Programming and Scripting
Hi,
I have a string wherein i need to replace special characters with backslash and that character.
Ex:
If my string is a=qwerty123@!,
then the new string should be a_new=qwerty123\@\!\,
Thanks (3 Replies)
Discussion started by: temp_user
3 Replies
10. Shell Programming and Scripting
I have a file which comes every day and the file data look's as below.
Vi abc.txt
a|b|c|d\n
a|g|h|j\n
Some times we receive the file with only a new line character in the file like
vi abc.txt
\n (8 Replies)
Discussion started by: rak Kundra
8 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)