i try to get the year and month values using the below shell script
when i enter the script like this
#!/usr/bin/ksh
dd=`DATE +%Y%M`
echo $dd
it is showing the error as shown below
abc.ksh: DATE: not found
any suggestions please (3 Replies)
Date of Request: 20080514 10:37 Submitted By: JPCHIANG
i want to get the value "JPCHIANG" only in read a file, however, when i do this:
name=`"$line"|cut -d " " -f8`
it display all the line and append 'not found' at the end of the statement
the $line is actually a variable in a... (2 Replies)
Hello,
I'm trying to assign a numeric value that is returned from one of my programs to a variable in tcsh. I want to do:
@ r10 = './my_prog file 35'
where ./my_prog file 35 returns a decimal value, but this doesn't work. How do I achieve the desired result?
Janet (4 Replies)
Hello all,
I am working on a basic script but need a little help.
Issue:
I am running a SQL Query using sqlplus and a shell script. I have the output of the statement stored as variable $A. $A is set to "other text here 45678754 other text here". I need to strip all text except that numeric... (13 Replies)
I am getting back on the C++ programming after many years away. I recently received an SDK that has code like this where numeric values end in 'U'. What does this mean?
if ((ptr % 16U) == 0U)
return buffer; (3 Replies)
Hi Guru`s,
I have to write a prog. which will traverse through diff. directories and then extract some data from files. I have written it and its working fine.
But I have tested it in 1 folder.
There are many folders and I need to loop through each of them. I am not sure abt the... (4 Replies)
Hi - Help needed.
I have an input file that looks something like this, but with a lot more entries:
A
Customer1
B
4500
C
8000
A
Customer2
B
6422
C
8922
I need to be able to print details for each customer on one line per customer.
ie. if I could print these to a file and then cat... (3 Replies)
I wnat to assign a set of values to a variable
and
use it in if condition.
for example:
i=$1
d=1 2 3 4 5 6
if
then
echo "Fine"
else
echo "Check"
fi
i will either of the value in d, i.e. i can be 1 or 2 or any value in d, How this can be done?
Thanks in advance (2 Replies)
I have a situation where my variable needs to pick up any of the 4 values from the environment it is in
for e.g i am on server named a
server=a (script running on this server)
ftp servers= b c d e ----- the parameter passed should be any of these values in these 4 values, if not throw an... (4 Replies)
Hi, I was wondering if anyone could assist me for (what is probably) a very straightforward answer.
I have input files containing something like
File 1
Apples
Apples
Apples
Apples
File 2
Bananas
Bananas
Bananas
Bananas (4 Replies)
Discussion started by: hubleo
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)