i have some commands written line by line in one flat file
i have to read each linefrom this file(file name passed as parameter)
and then i have to execute this
How can i do it? (2 Replies)
I would like to read directories and assign to an array where the user can select a directory from the output. For example, a dir list will populate with a number assigned to each dir. I would like to ask the user to select the dir they want. TIA, I don't know what this would be called so I... (2 Replies)
Hi Gurus,
Thanks in advance...
I am new to writing shell scripting and help me out reading a flat file with fixed length.
I have a fixed length flat file with storename(lenth 6) , emailaddress(lenth 15), location(10). There is NO delimiters in that file.
Like the following str00001.txt... (2 Replies)
I have one flat file like below
id1~col~batch1
id2~col2~batch2
id3~col3~batch3
I need to read the first column one by one and I need to write one db2 query based on that column1
Like
for (i=0;i<=10;i++)
do
insert into table column (con_id) values (select column from table where... (4 Replies)
I have a file something like this:aaaa.xml content of the file is
0,<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<storeInformation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<s>
<BRANCH_NO>3061</BRANCH_NO>
<BRANCH_NAME>GREEN EXPRESS</BRANCH_NAME> ... (4 Replies)
I have an array and two variables as below,
I need to check if $datevar is present in $filename.
If so, i need to replace $filename with the values in the array.
I need the output inside an ARRAY
How can this be done.
Any help will be appreciated. Thanks in advance. (2 Replies)
Hello Guys
Please help me with the below issue
I want to read a flat file source upto certain number of columns
Say my flat file has 30 columns but I want to read upto 25 columns only
How come the above issue can be addressed?
Thanks a lot!!!! (1 Reply)
Hello Guys
I have a multiple character delimited flat file "|~|". when I tried to read the data the "|" character also coming
Example
I/P file
9882590|~|20111207|~|K03501000063005574033961|~|K|~|
Command to get the second column I used
awk -F"|~|" ' {print $2}' ... (2 Replies)
Hi,
I want the Perl script with versions 5.8.2 and 5.8.5 starting with
#!/usr/bin/perl
The Perl program should read the excel file or text file line by line and taking into an array and search in the UNIX directories for reference file of .jsp or .js or .xsl with path .The Object names... (2 Replies)
Hi guys and gals...
MacBook Pro.
OSX 10.13.2, default bash terminal.
I have a flat file 1920 bytes in size of whitespaces only. I need to put every single whitespace character into a bash array cell.
Below are two methods that work, but both are seriously ugly.
The first one requires that I... (7 Replies)
Discussion started by: wisecracker
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)