I have a current code working(named subst1) having a user be able to type this line to substitute words using the sed command:
subst1 old-pattern new-pattern filename
Here is my shell script:
#!/bin/bash
# subst1
ARGS=3
E_BADARGS=65
if
then
echo "Usage: `basename $0`... (1 Reply)
Hey everybody
I need some help on how to order the data in file such as a file have first name last name and city and i would like to order them to in the same order by using sed
thanks alot for your time (6 Replies)
Hi i have a problem how to put som lines on top or in the bottom of the text with sed.
problem is that i am reading from stdin and when i have som lines starting with ++, i have to put some characters on the top of the lines starting with that ++
example of input
oooo
++abcd
++befg... (1 Reply)
Hi folks, maybe somebody here can help me.
I have 2 files. File A and File B. File A contains URLs leading to files on the Internet, with one URL per line; The format of the URLs on each line in File A is .
File B contains only the filenames from each line in File A; One filename per line.
... (11 Replies)
Hi All,
Below is the script which i have written in cygwin:
#!/usr/bin/sh
fname=$1
cat $fname | sed 's/ //g' > fname1
for i in `cat $fname1`
do
echo $i > file1
#param1 is script name
param1=`awk -F , '{print $1}' file1`
param1="$param1.sql"
#param2 is BL
param2=`awk -F , '{print... (5 Replies)
Hi,
i want to replace sub text which is in the middle of long text.
let me be more clear with an example.
Here is the actual text in the xml file
<module-option name="principalDNSuffix">,cn=Users,dc=X,dc=Y</module-option>
Now, in the above text, i want to replace all the content lying... (3 Replies)
Generate a ddl file, we have a flat file which contains many commands like REM, CREATE table, TRuncate etc
This script should copy only create table statements to the ddl file.
Create stmts can be in a single or multiple lines.
ex:- INPUT FILE
create table tbl1
(fld1,... (5 Replies)
Hi, I want to read a file from the command line and remove all the spaces, tabs in it, replacing it with comma(,), and write it to a new file. can you help me out with this scenario. (1 Reply)
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:
Generalize your sub2 script, producing a new script sub3 that will apply a substitution to any number of files... (16 Replies)
Hi Guys,
I have a xml file as below where I need to find the particular XML tag(<dpath>) and delete the content of it.
<?xml version="1.0" encoding="UTF-8"?>
<title>XML</title><head>Ram</head><ControlCenter><doStatus>1</doStatus></ControlCenter><exitlabel>Gzip... (7 Replies)
Discussion started by: Vinoth Kumar G
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)
09-01-2010
