04-30-2010
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
i would like to enter (user input) a bunch of numbers seperated by space:
10 15 20 25
and use awk to print out any lines in a file that have matching numbers
so output is:
22 44 66 55 (10) 77 (20)
(numbers 10 and 20 matched for example)
is this possible in awk . im using gawk for... (5 Replies)
Discussion started by: tanku
5 Replies
2. Shell Programming and Scripting
Hai,
Can you please guide me, to compare the floating point numbers.
Eg.
If
then
echo "value1 is grater "
fi
This code is not working properly when i excuted with floating values or real numbers (13 Replies)
Discussion started by: padarthy
13 Replies
3. Shell Programming and Scripting
Hi everyone,
I need to compare 2 big Floating/Real numbers in a script.
After the comparission it is showing worng values in my script.
echo "Enter value1"
read value1
echo "Enter value2"
read value2
Result=`echo "if($value1 > $value2) 1" | bc`
if ; then
echo "$value1 is... (4 Replies)
Discussion started by: padarthy
4 Replies
4. Shell Programming and Scripting
if the column1 and 2 in both files has same key (for example "a" and "a1") compare each first key value(a1 of a) of input2 (for example 1-4 or 65-69 not 70-100 or 44-40 etc) with all the values in input1.
if the range of first key value in input2 is outof range in input1 values named it as out... (54 Replies)
Discussion started by: repinementer
54 Replies
5. Shell Programming and Scripting
I am begining to learn bourne shell and as a practice I have written a script which when given the purchase price and percentage of discount calculates the savings.
I somehow cannot figure out why my script fails to do arthimatic calculation on real numbers.
Could anyone look at the script... (5 Replies)
Discussion started by: Tirmazi
5 Replies
6. Shell Programming and Scripting
Hello to all,
I hope some awk guru could help me.
I have 2 input files:
File1: Is the complete database
File2: Contains some numbers which I want to compare
File1:
"NUMBERKEY","SERVICENAME","PARAMETERNAME","PARAMETERVALUE","ALTERNATENUMBERKEY"... (9 Replies)
Discussion started by: Ophiuchus
9 Replies
7. Shell Programming and Scripting
Hi Experts,
I am finding difficulty to get exact match:
file
OPERATING_SYSTEM=HP-UX
LOOPBACK_ADDRESS=127.0.0.1
INTERFACE_NAME="lan3"
IP_ADDRESS="10.53.52.241"
SUBNET_MASK="255.255.255.192"
BROADCAST_ADDRESS=""
INTERFACE_STATE=""
DHCP_ENABLE=0
INTERFACE_NAME="lan3:1"... (6 Replies)
Discussion started by: rveri
6 Replies
8. Shell Programming and Scripting
Hi,
I'm trying to match a filename that could be called anything from vout001 to vout252 and was trying to do a small test but I'm not getting the result I thought I would..
Can some one tell me what I'm doing wrong?
*****@********>echo $mynumber ... (4 Replies)
Discussion started by: Jazmania
4 Replies
9. Shell Programming and Scripting
I am trying to create a cronjob that will run on startup that will look at a list.txt file to see if there is a later version of a database using database.txt as the source. The matching lines are written to output.
$1 in database.txt will be in list.txt as a partial match. $2 of database.txt... (2 Replies)
Discussion started by: cmccabe
2 Replies
10. Shell Programming and Scripting
In the awk below I am trying to output those lines that Match between file1 and file2, those Missing in file1, and those missing in file2. Using each $1,$2,$4,$5 value as a key to match on, that is if those 4 fields are found in both files the match, but if those 4 fields are not found then missing... (0 Replies)
Discussion started by: cmccabe
0 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)